CVE-2023-32233
published 2023-05-08CVE-2023-32233: In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write…
PriorityP181high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
ITWEXPLOITVulnCheck KEV
Exploited in the wild
EPSS
12.97%
95.9th percentile
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
Affected
35 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.27-1 (bookworm) | linux 6.1.27-1 (bookworm) |
| chrome_chrome | — | — | |
| linux | linux_kernel | >= 0 < 5.10.179-1 | 5.10.179-1 |
| linux | linux_kernel | >= 0 < 6.1.27-1 | 6.1.27-1 |
| linux | linux_kernel | >= 0 < 6.1.27-1 | 6.1.27-1 |
| linux | linux_kernel | >= 0 < 6.1.27-1 | 6.1.27-1 |
| linux | linux_kernel | >= 0 < 4.15.0-212.223 | 4.15.0-212.223 |
| linux | linux_kernel | >= 0 < 5.4.0-150.167 | 5.4.0-150.167 |
| linux | linux_kernel | >= 0 < 5.15.0-73.80 | 5.15.0-73.80 |
| linux | linux_kernel | >= 0 < 4.4.0-241.275 | 4.4.0-241.275 |
| linux | linux_kernel | >= 0 < 5.4.0-150.167 | 5.4.0-150.167 |
| linux | linux_kernel | >= 0 < 5.15.0-73.80 | 5.15.0-73.80 |
| linux | linux_kernel | >= 3.13 < 4.14.315 | 4.14.315 |
| linux | linux_kernel | >= 4.15 < 4.19.283 | 4.19.283 |
| linux | linux_kernel | >= 4.20 < 5.4.243 | 5.4.243 |
| linux | linux_kernel | >= 5.11 < 5.15.111 | 5.15.111 |
| linux | linux_kernel | >= 5.16 < 6.1.28 | 6.1.28 |
| linux | linux_kernel | >= 5.5 < 5.10.180 | 5.10.180 |
| linux | linux_kernel | >= 6.2 < 6.2.15 | 6.2.15 |
| linux | linux_kernel | >= 6.3 < 6.3.2 | 6.3.2 |
| msrc | cbl2_kernel_5.15.112.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →The vulnerability is in the Linux kernel's Netfilter nf_tables subsystem; detect exploitation attempts by monitoring for unprivileged users creating or manipulating nf_tables batch requests (NFT_MSG_NEWSET/NFT_MSG_DELSET for anonymous sets) via netlink sockets, especially from processes without CAP_NET_ADMIN that have created a user namespace. ↗
- →Monitor for unprivileged local processes spawning user namespaces (CLONE_NEWUSER) combined with net namespaces (CLONE_NEWNET) to self-grant CAP_NET_ADMIN, which is the prerequisite exploitation path for this vulnerability on Red Hat/Linux systems with CONFIG_USER_NS enabled. ↗
- →This CVE has been publicly described as a 'Container escape vulnerability'; monitor container workloads for unexpected privilege escalation or namespace manipulation via nf_tables netlink messages. ↗
- →CVE-2023-32233 is referenced as a msg_msg spray technique reference in exploit code for related kernel UAF vulnerabilities; monitor for high-volume msgsnd() syscalls (msg_msg spray) combined with netfilter netlink activity from the same process. ↗
- ·Exploitation requires CAP_NET_ADMIN capability or root; on systems with CONFIG_USER_NS enabled, unprivileged users can obtain this via user namespaces. Disabling user namespaces (user.max_user_namespaces=0) or blacklisting the nf_tables kernel module mitigates the attack surface. ↗
- ·In OpenShift Container Platform, the vulnerability impact is rated Low because container processes are namespaced and switching namespaces inside a running OpenShift container does not yield the necessary capabilities. ↗
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vulncheck7.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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Red Hat
kernel: netfilter: nft_tunnel: fix geneve_opt type confusion addition
vendor_redhat·2025-04-16·CVSS 7.8
CVE-2025-22056 [HIGH] CWE-787 kernel: netfilter: nft_tunnel: fix geneve_opt type confusion addition
kernel: netfilter: nft_tunnel: fix geneve_opt type confusion addition
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_tunnel: fix geneve_opt type confusion addition
When handling multiple NFTA_TUNNEL_KEY_OPTS_GENEVE attributes, the
parsing logic should place every geneve_opt structure one by one
compactly. Hence, when deciding the next geneve_opt position, the
pointer addition should be in units of char *.
However, the current implementation erroneously does type conversion
before the addition, which will lead to heap out-of-bounds write.
[ 6.989857] ==================================================================
[ 6.990293] BUG: KASAN: slab-out-of-bounds in nft_tunnel_obj_init+0x977/0xa70
[ 6.990725] Write of size 124 at addr ffff888005f18974 by task
CISA ICS
ABB M2M Gateway
cisa_ics·2025-04-15
ABB M2M Gateway
ICS Advisory
##
ABB M2M Gateway
Release DateApril 15, 2025
Alert CodeICSA-25-105-08
Related topics:
Industrial Control System Vulnerabilities, Industrial Control Systems
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v4 8.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: ABB
- Equipment: M2M Gateway
- Vulnerabilities: Integer Overflow or Wraparound, Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'), Unquoted Search Path or Element, Untrusted Search Path, Use After Free, Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Missing Release of Memory after Effective Lifetime, Allocation of Resources Without Limits or Throttling, Improper Privilege Management, Improper Limitati
Red Hat
kernel: netfilter: ipset: add missing range check in bitmap_ip_uadt
vendor_redhat·2024-12-06·CVSS 7.8
CVE-2024-53141 [HIGH] CWE-20 kernel: netfilter: ipset: add missing range check in bitmap_ip_uadt
kernel: netfilter: ipset: add missing range check in bitmap_ip_uadt
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: add missing range check in bitmap_ip_uadt
When tb[IPSET_ATTR_IP_TO] is not present but tb[IPSET_ATTR_CIDR] exists,
the values of ip and ip_to are slightly swapped. Therefore, the range check
for ip should be done later, but this part is missing and it seems that the
vulnerability occurs.
So we should add missing range checks and remove unnecessary range checks.
Statement: For the Red Hat Enterprise Linux 9, the vulnerability fixed starting from the 9.6 version.
The attack complexity is High, because existing reproducer doesn't work for Red Hat Enterprise Linux 8 (any version) or Fedora (latest version) or Red Hat Enterprise Linux 9 (lat
Red Hat
kernel: netfilter: nf_tables: prevent nf_skb_duplicated corruption
vendor_redhat·2024-10-21·CVSS 5.5
CVE-2024-49952 [MEDIUM] CWE-284 kernel: netfilter: nf_tables: prevent nf_skb_duplicated corruption
kernel: netfilter: nf_tables: prevent nf_skb_duplicated corruption
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: prevent nf_skb_duplicated corruption
syzbot found that nf_dup_ipv4() or nf_dup_ipv6() could write
per-cpu variable nf_skb_duplicated in an unsafe way [1].
Disabling preemption as hinted by the splat is not enough,
we have to disable soft interrupts as well.
[1]
BUG: using __this_cpu_write() in preemptible [00000000] code: syz.4.282/6316
caller is nf_dup_ipv4+0x651/0x8f0 net/ipv4/netfilter/nf_dup_ipv4.c:87
CPU: 0 UID: 0 PID: 6316 Comm: syz.4.282 Not tainted 6.11.0-rc7-syzkaller-00104-g7052622fccb1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [
Red Hat
kernel: netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type
vendor_redhat·2024-07-12·CVSS 7.0
CVE-2024-39503 [HIGH] CWE-416 kernel: netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type
kernel: netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type
Lion Ackermann reported that there is a race condition between namespace cleanup
in ipset and the garbage collection of the list:set type. The namespace
cleanup can destroy the list:set type of sets while the gc of the set type is
waiting to run in rcu cleanup. The latter uses data from the destroyed set which
thus leads use after free. The patch contains the following parts:
- When destroying all sets, first remove the garbage collectors, then wait
if needed and then destroy the sets.
- Fix the badly ordered "wait then remove gc" for the destroy a single
CISA ICS
Siemens SCALANCE XCM-/XRM-300
cisa_ics·2024-02-15
Siemens SCALANCE XCM-/XRM-300
ICS Advisory
##
Siemens SCALANCE XCM-/XRM-300
Release DateFebruary 15, 2024
Alert CodeICSA-24-046-11
As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SCALANCE XCM-/XRM-300
- Vulnerabilities: Out-of-bounds Write, Incorrect Type Conversion or Cast, Improper Verification of Cryptographic Signature, Improper Access Control, Improper Authentication, Missing Encryption
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS
vendor_paloalto·2024-02-14·CVSS 9.8
CVE-2017-18342 [CRITICAL] PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS
The Palo Alto Networks Product Security Assurance team has evaluated the following open source software (OSS) CVEs as they relate to PAN-OS software. While PAN-OS software may include the
CVEs: CVE-2017-18342, CVE-2017-8923, CVE-2017-9120, CVE-2019-1551, CVE-2019-16865, CVE-2019-16905, CVE-2019-19523, CVE-2019-19528, CVE-2019-19911, CVE-2020-0404, CVE-2020-0431, CVE-2020-0466, CVE-2020-10379, CVE-2020-11538, CVE-2020-11608, CVE-2020-12114, CVE-2020-12321, CVE-2020-12362, CVE-2020-12363, CVE-2020-12364, CVE-2020-13757, CVE-2020-14314, CVE-2020-14351, CVE-2020-15778, CVE-2020-1967, CVE-2020-24394, CVE-2020-24504, CVE-2020-25211, CVE-2020-25212, CVE-2020-25284, CVE-2020-25285, CVE-2020-25717, CVE-2020-26541, CVE-2020-2715
Red Hat
kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation
vendor_redhat·2024-01-02·CVSS 7.8
CVE-2024-0193 [HIGH] CWE-416 kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation
kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation
A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.
A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with
Red Hat
kernel: inactive elements in nft_pipapo_walk
vendor_redhat·2023-12-18·CVSS 7.8
CVE-2023-6817 [HIGH] CWE-416 kernel: inactive elements in nft_pipapo_walk
kernel: inactive elements in nft_pipapo_walk
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free.
We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.
A use-after-free flaw was found in the Netfilter subsystem in the Linux kernel via the nft_pipapo_walk function. This issue may allow a local user with CAP_NET_ADMIN capability to trigger an application crash, information disclosure, or local privilege escalation.
Statement: Only local users with `CAP_NET_ADMIN` capability or root can trigger this i
Ubuntu
Linux kernel (IoT) vulnerabilities
vendor_ubuntu·2023-07-27·CVSS 5.5
CVE-2023-2162 [MEDIUM] Linux kernel (IoT) vulnerabilities
Title: Linux kernel (IoT) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon
GPU devices did not properly validate memory allocation in certain
situations, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2022-3108)
Zheng Wang discovered that the Intel i915 graphics driver in the Linux
kernel did not properly handle certain error conditions, leading to a
double-free. A local attacker could possibly use this to cause a denial of
service (system crash). (CVE-2022-3707)
It was discovered that the infrared transceiver USB driver did not properly
handle USB control messages. A local attacker with physica
Ubuntu
Linux kernel (Xilinx ZynqMP) vulnerabilities
vendor_ubuntu·2023-07-12·CVSS 5.5
CVE-2023-1380 [MEDIUM] Linux kernel (Xilinx ZynqMP) vulnerabilities
Title: Linux kernel (Xilinx ZynqMP) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon
GPU devices did not properly validate memory allocation in certain
situations, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2022-3108)
Zheng Wang discovered that the Intel i915 graphics driver in the Linux
kernel did not properly handle certain error conditions, leading to a
double-free. A local attacker could possibly use this to cause a denial of
service (system crash). (CVE-2022-3707)
It was discovered that the infrared transceiver USB driver did not properly
handle USB control messages. A local attacker wi
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2023-06-22·CVSS 5.5
CVE-2023-33203 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux
Ubuntu
Kernel Live Patch Security Notice
vendor_ubuntu·2023-06-21·CVSS 7.8
CVE-2023-32233 [HIGH] Kernel Live Patch Security Notice
Title: Kernel Live Patch Security Notice
Summary: Several security issues were fixed in the kernel.
It was discovered that the OverlayFS implementation in the Linux kernel did
not properly handle copy up operation in some conditions. A local attacker
could possibly use this to gain elevated privileges.(CVE-2023-0386)
It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform data buffer size validation in some
situations. A physically proximate attacker could use this to craft a
malicious USB device that when inserted, could cause a denial of service
(system crash) or possibly expose sensitive information.(CVE-2023-1380)
It was discovered that a race condition existed in the io_uring subsystem
in the Linux kernel, leading to a use-after-fre
Chrome
Long Term Support Channel Update for ChromeOS: CVE-2023-32233
vendor_chrome·2023-06-21·CVSS 7.8
CVE-2023-32233 [HIGH] Long Term Support Channel Update for ChromeOS: CVE-2023-32233
Long Term Support Channel Update for ChromeOS
CVE-2023-32233
Ubuntu
Linux kernel (Intel IoTG) vulnerabilities
vendor_ubuntu·2023-06-14·CVSS 7.1
CVE-2023-31436 [HIGH] Linux kernel (Intel IoTG) vulnerabilities
Title: Linux kernel (Intel IoTG) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors
Red Hat
kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests
vendor_redhat·2023-06-08·CVSS 7.8
CVE-2023-3390 [HIGH] CWE-416 kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests
kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests
A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c.
Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue.
We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97.
A use-after-free flaw was found in the Netfilter subsystem of the Linux kernel when processing named and anonymous sets in batch requests, which can lead to performing arbitrary reads and writes in kernel memory. This flaw allows a local us
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2023-06-08·CVSS 6.6
CVE-2023-32233 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2023-06-08·CVSS 7.1
CVE-2023-30456 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux
Ubuntu
Linux kernel (Azure CVM) vulnerabilities
vendor_ubuntu·2023-06-02·CVSS 7.1
CVE-2023-32233 [HIGH] Linux kernel (Azure CVM) vulnerabilities
Title: Linux kernel (Azure CVM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors i
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2023-06-01·CVSS 5.5
CVE-2023-0459 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2023-06-01·CVSS 7.1
CVE-2023-30456 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2023-05-31·CVSS 7.1
CVE-2023-32233 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2023-05-30·CVSS 4.4
CVE-2023-32233 [MEDIUM] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu
Linux kernel contained a race condition when handling inode locking in some
situations. A local attacker could use this to cause a denial of service
(kernel deadlock). (CVE-2023-2612)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary ch
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2023-05-30·CVSS 5.5
CVE-2023-30456 [MEDIUM] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in certain situations. An attacker in a guest VM could use this to cause a
denial of service (guest crash). (CVE-2023-30456)
Gwnaun Jung discovered that the SFB packet scheduling implementation in the
Linux kernel cont
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2023-05-30·CVSS 7.8
CVE-2023-30456 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in certain situations. An attacker in a guest VM could use this to cause a
denial of service (guest crash). (CVE-2023-30456)
It was discovered that the Xircom PCMCIA network device driver in the Linux
kernel did not pr
Microsoft
In the Linux kernel through 6.3.1 a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged loc
vendor_msrc·2023-05-09·CVSS 7.8
CVE-2023-32233 [HIGH] CWE-416 In the Linux kernel through 6.3.1 a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged loc
In the Linux kernel through 6.3.1 a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post f
Red Hat
kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation
vendor_redhat·2023-05-02·CVSS 7.8
CVE-2023-32233 [HIGH] CWE-416 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation
kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
A use-after-free vulnerability was found in the Netfilter subsystem of the Linux kernel when processing batch requests to update nf_tables configuration. This vulnerability can be abused to perform arbitrary reads and writes in kernel memory. A local user (with CAP_NET_ADMIN capability) could use this flaw to crash the system or potentially escalate their privileges on the system.
Statement: On
Debian
CVE-2023-32233: linux - In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when ...
vendor_debian·2023·CVSS 7.8
CVE-2023-32233 [HIGH] CVE-2023-32233: linux - In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when ...
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
Scope: local
bookworm: resolved (fixed in 6.1.27-1)
bullseye: resolved (fixed in 5.10.179-1)
forky: resolved (fixed in 6.1.27-1)
sid: resolved (fixed in 6.1.27-1)
trixie: resolved (fixed in 6.1.27-1)
OSV
linux-iot vulnerabilities
osv·2023-07-27·CVSS 5.5
CVE-2022-3108 [MEDIUM] linux-iot vulnerabilities
linux-iot vulnerabilities
Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon
GPU devices did not properly validate memory allocation in certain
situations, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2022-3108)
Zheng Wang discovered that the Intel i915 graphics driver in the Linux
kernel did not properly handle certain error conditions, leading to a
double-free. A local attacker could possibly use this to cause a denial of
service (system crash). (CVE-2022-3707)
It was discovered that the infrared transceiver USB driver did not properly
handle USB control messages. A local attacker with physical access could
plug in a specially crafted USB device to cause a denial of service
OSV
linux-xilinx-zynqmp vulnerabilities
osv·2023-07-12·CVSS 5.5
CVE-2022-3108 [MEDIUM] linux-xilinx-zynqmp vulnerabilities
linux-xilinx-zynqmp vulnerabilities
Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon
GPU devices did not properly validate memory allocation in certain
situations, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2022-3108)
Zheng Wang discovered that the Intel i915 graphics driver in the Linux
kernel did not properly handle certain error conditions, leading to a
double-free. A local attacker could possibly use this to cause a denial of
service (system crash). (CVE-2022-3707)
It was discovered that the infrared transceiver USB driver did not properly
handle USB control messages. A local attacker with physical access could
plug in a specially crafted USB device to cause a denial
OSV
Kernel Live Patch Security Notice
osv·2023-06-21·CVSS 7.8
CVE-2023-0386 [HIGH] Kernel Live Patch Security Notice
Kernel Live Patch Security Notice
It was discovered that the OverlayFS implementation in the Linux kernel did
not properly handle copy up operation in some conditions. A local attacker
could possibly use this to gain elevated privileges.(CVE-2023-0386)
It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform data buffer size validation in some
situations. A physically proximate attacker could use this to craft a
malicious USB device that when inserted, could cause a denial of service
(system crash) or possibly expose sensitive information.(CVE-2023-1380)
It was discovered that a race condition existed in the io_uring subsystem
in the Linux kernel, leading to a use-after-free vulnerability. A local
attacker could use this to cause a denial
OSV
linux-intel-iotg-5.15 vulnerabilities
osv·2023-06-14·CVSS 7.1
CVE-2023-32233 [HIGH] linux-intel-iotg-5.15 vulnerabilities
linux-intel-iotg-5.15 vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in certain si
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
osv·2023-06-08·CVSS 6.6
CVE-2023-32233 [MEDIUM] linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control
OSV
linux-intel-iotg, linux-raspi vulnerabilities
osv·2023-06-08·CVSS 7.1
CVE-2023-32233 [HIGH] linux-intel-iotg, linux-raspi vulnerabilities
linux-intel-iotg, linux-raspi vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in ce
OSV
linux-azure-fde, linux-azure-fde-5.15 vulnerabilities
osv·2023-06-02·CVSS 7.1
CVE-2023-32233 [HIGH] linux-azure-fde, linux-azure-fde-5.15 vulnerabilities
linux-azure-fde, linux-azure-fde-5.15 vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registe
OSV
linux, linux-aws, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities
osv·2023-06-01·CVSS 7.1
[HIGH] linux, linux-aws, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities
linux, linux-aws, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
R
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-snapdragon vulnerabilities
osv·2023-06-01·CVSS 7.1
CVE-2023-32233 [HIGH] linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-snapdragon vulnerabilities
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-snapdragon vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested
OSV
linux-aws-5.4, linux-bluefield vulnerabilities
osv·2023-06-01·CVSS 5.5
CVE-2023-32233 [MEDIUM] linux-aws-5.4, linux-bluefield vulnerabilities
linux-aws-5.4, linux-bluefield vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in c
OSV
linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gke-5.15, linux-gkeop, linux-hwe-5.15, linux-hwe-5.19, linux-ibm, linux-kvm, linux-lowlaten
osv·2023-05-31·CVSS 7.1
[HIGH] linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gke-5.15, linux-gkeop, linux-hwe-5.15, linux-hwe-5.19, linux-ibm, linux-kvm, linux-lowlaten
linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gke-5.15, linux-gkeop, linux-hwe-5.15, linux-hwe-5.19, linux-ibm, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle, linux-oracle-5.15, linux-raspi vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to c
OSV
linux-oem-6.0 vulnerabilities
osv·2023-05-30·CVSS 7.8
CVE-2023-32233 [HIGH] linux-oem-6.0 vulnerabilities
linux-oem-6.0 vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in certain situations. An attacker in a guest VM could use this to cause a
denial of service (guest crash). (CVE-2023-30456)
It was discovered that the Xircom PCMCIA network device driver in the Linux
kernel did not properly handle device removal events. A physically
proximate attacker could use
OSV
linux-oem-5.17 vulnerabilities
osv·2023-05-30·CVSS 5.5
CVE-2023-32233 [MEDIUM] linux-oem-5.17 vulnerabilities
linux-oem-5.17 vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in certain situations. An attacker in a guest VM could use this to cause a
denial of service (guest crash). (CVE-2023-30456)
Gwnaun Jung discovered that the SFB packet scheduling implementation in the
Linux kernel contained a use-after-free vulnerability. A local attacker
could use this to caus
OSV
linux-oem-6.1 vulnerabilities
osv·2023-05-30·CVSS 4.7
CVE-2023-32233 [MEDIUM] linux-oem-6.1 vulnerabilities
linux-oem-6.1 vulnerabilities
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-32233)
Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu
Linux kernel contained a race condition when handling inode locking in some
situations. A local attacker could use this to cause a denial of service
(kernel deadlock). (CVE-2023-2612)
OSV
CVE-2023-32233: In the Linux kernel through 6
osv·2023-05-08·CVSS 7.8
CVE-2023-32233 [HIGH] CVE-2023-32233: In the Linux kernel through 6
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
GHSA
GHSA-4qxv-phx5-f6fx: In the Linux kernel through 6
ghsa_unreviewed·2023-05-08
CVE-2023-32233 [HIGH] CWE-416 GHSA-4qxv-phx5-f6fx: In the Linux kernel through 6
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
VulnCheck
Linux Kernel Use After Free
vulncheck·2023·CVSS 7.8
CVE-2023-32233 [HIGH] Linux Kernel Use After Free
Linux Kernel Use After Free
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
Affected: Linux Kernel
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: https://securelist.com/exploits-and-vulnerabilities-q3-2024/114839/; https://securelist.com/vulnerabilities-and-exploits-in-q4-2025/119105/
Exploit PoC: https://vulncheck.com/xdb/c076df76f476; https://vulncheck.com/xdb/814294d50f42; https://vulncheck.com/xdb/fb9759f7ce7c; h
No detection rules found.
Securelist
Exploits and vulnerabilities in Q1 2026
blogs_securelist·2026-05-07·CVSS 7.8
CVE-2026-21519 [HIGH] Exploits and vulnerabilities in Q1 2026
Alexander Kolesnikov
Table of Contents
Statistics on registered vulnerabilities
Exploitation statistics
Windows and Linux vulnerability exploitation
Most common published exploits
Vulnerability exploitation in APT attacks
C2 frameworks
Notable vulnerabilities
CVE-2026-21519: Desktop Window Manager vulnerability
RegPwn (CVE-2026-21533): a system settings access control vulnerability
CVE-2026-21514: a Microsoft Office vulnerability
Clawdbot (CVE-2026-25253): an OpenClaw vulnerability
CVE-2026-34070: LangChain framework vulnerability
CVE-2026-22812: an OpenCode vulnerability
Conclusion and advice
Authors
Alexander Kolesnikov
During Q1 2026, the exploit kits leveraged by threat actors to target user systems expanded once again, incorporating new exploits for the Microsoft Off
Securelist
Vulnerability landscape in Q4 2025
blogs_securelist·2026-03-06
Vulnerability landscape in Q4 2025
Table of Contents
- Statistics on registered vulnerabilities
- Exploitation statistics
- Vulnerability exploitation in APT attacks
- C2 frameworks
- Notable vulnerabilities
- Conclusion and advice
Authors
- Alexander Kolesnikov
The fourth quarter of 2025 went down as one of the most intense periods on record for high-profile, critical vulnerability disclosures, hitting popular libraries and mainstream applications. Several of these vulnerabilities were picked up by attackers and exploited in the wild almost immediately.
In this report, we dive into the statistics on published vulnerabilities and exploits, as well as the known vulnerabilities leveraged with popular C2 frameworks throughout Q4 2025.
## Statistics on registered vulnerabilities
This section contains statistics on regis
Securelist
Exploits and vulnerabilities in Q4 2025
blogs_securelist·2026-03-06·CVSS 7.8
CVE-2025-55182 [HIGH] Exploits and vulnerabilities in Q4 2025
Table of Contents
Statistics on registered vulnerabilities
Exploitation statistics
Windows and Linux vulnerability exploitation
Most common published exploits
Vulnerability exploitation in APT attacks
C2 frameworks
Notable vulnerabilities
React2Shell (CVE-2025-55182): a vulnerability in React Server Components
CVE-2025-54100: command injection during the execution of curl (Invoke-WebRequest)
CVE-2025-11001: a vulnerability in 7-Zip
RediShell (CVE-2025-49844): a vulnerability in Redis
CVE-2025-24990: a vulnerability in the ltmdm64.sys driver
CVE-2025-59287: a vulnerability in Windows Server Update Services (WSUS)
Conclusion and advice
Authors
Alexander Kolesnikov
The fourth quarter of 2025 went down as one of the most intense periods on record for high-profile, critical vul
Securelist
Exploits and vulnerabilities in Q3 2024
blogs_securelist·2024-12-06·CVSS 8.1
CVE-2024-47177 [HIGH] Exploits and vulnerabilities in Q3 2024
Table of Contents
Statistics on registered vulnerabilities
Exploitation statistics
Windows and Linux vulnerability exploitation
Most prevalent exploits
Vulnerability exploitation in APT attacks
Interesting vulnerabilities
CVE-2024-47177 (CUPS filters)
CVE-2024-38112 (MSHTML Spoofing)
CVE-2024-6387 (regreSSHion)
CVE-2024-3183 (Free IPA)
CVE-2024-45519 (Zimbra)
CVE-2024-5290 (Ubuntu wpa_supplicant)
Conclusion and advice
Authors
Alexander Kolesnikov
Q3 2024 saw multiple vulnerabilities discovered in Windows and Linux subsystems that are not standard for cyberattacks. This is because operating system developers have been releasing new security mitigations for whole sets of vulnerabilities in commonly used subsystems. For example, a log integrity check is set to appear in the Co
Securelist
Analyzing the vulnerability landscape in Q3 2024
blogs_securelist·2024-12-06·CVSS 8.1
CVE-2024-47177 [HIGH] Analyzing the vulnerability landscape in Q3 2024
Table of Contents
- Statistics on registered vulnerabilities
- Exploitation statistics
- Vulnerability exploitation in APT attacks
- Interesting vulnerabilities
- CVE-2024-47177 (CUPS filters)
- CVE-2024-38112 (MSHTML Spoofing)
- CVE-2024-6387 (regreSSHion)
- CVE-2024-3183 (Free IPA)
- CVE-2024-45519 (Zimbra)
- CVE-2024-5290 (Ubuntu wpa_supplicant)
- Conclusion and advice
Authors
- Alexander Kolesnikov
Q3 2024 saw multiple vulnerabilities discovered in Windows and Linux subsystems that are not standard for cyberattacks. This is because operating system developers have been releasing new security mitigations for whole sets of vulnerabilities in commonly used subsystems. For example, a log integrity check is set to appear in the Common Log Filing System (CLFS) in Windows, so the number
Checkpoint
15th May – Threat Intelligence Report
blogs_checkpoint·2023-05-15
CVE-2023-29325 15th May – Threat Intelligence Report
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## 15th May – Threat Intelligence Report
For the latest discoveries in cyber research for the week of 15th May, please download our Threat_Intelligence Bulletin
TOP ATTACKS AND BREACHES
The Swedish-Swiss multinational automation company ABB has been a victim of a ransomware attack conducted by the Russian Black Basta ransomware group. The threat actors have attacked the company’s Windows Active Directory, affecting hundreds of devices. To prevent the spread of ransomware to its customers, ABB terminated VPN connec
arXiv
KernJC: Automated Vulnerable Environment Generation for Linux Kernel Vulnerabilities
arxiv_fulltext·2024-09-24
KernJC: Automated Vulnerable Environment Generation for Linux Kernel Vulnerabilities
: Automated Vulnerable Environment Generation for Linux Kernel Vulnerabilities
Bonan Ruan
National University of Singapore
Jiahao Liu
National University of Singapore
Chuqi Zhang
National University of Singapore
Zhenkai Liang
National University of Singapore
## Abstract
Linux kernel vulnerability reproduction is a critical task in system security.
To reproduce a kernel vulnerability, the vulnerable environment and the Proof of Concept (PoC) program are needed.
Most existing research focuses on the generation of PoC, while the construction of environment is overlooked.
However, establishing an effective vulnerable environment to trigger a vulnerability is challenging.
Firstly, it is hard to guarantee that the selected kernel version for reproduction is vulnerable, as the vulner
Bugzilla
CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation
bugzilla·2023-05-08·CVSS 7.8
CVE-2023-32233 [HIGH] CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation
CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation
Use-After-Free in Netfilter nf_tables (net/netfilter/nf_tables_api.c)
can be abused by unprivileged local users to execute arbitrary Kernel
code.
The issue has been reproduced on:
* the current kernel build `5.19.0-41-generic` (x86_64) on
Ubuntu 22.10, and
* the current mainline v6.3 (commit
457391b0380335d5e9a5babdec90ac53928b23b4).
Discussion:
Reference: https://seclists.org/oss-sec/2023/q2/133
The issue says "[it] can be abused by unprivileged local users to escalate privileges" but aren't "unprivileged user namespaces" required to achieve this?
A regular unprivileged local user cannot execute any "nft" commands. If we disable "unprivileged user namespaces"
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.htmlhttp://www.openwall.com/lists/oss-security/2023/05/15/5https://bugzilla.redhat.com/show_bug.cgi?id=2196105https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1592a89942e9678f7d9c8030efa777c0d57edabhttps://github.com/torvalds/linux/commit/c1592a89942e9678f7d9c8030efa777c0d57edabhttps://lists.debian.org/debian-lts-announce/2023/06/msg00008.htmlhttps://lists.debian.org/debian-lts-announce/2023/07/msg00030.htmlhttps://news.ycombinator.com/item?id=35879660https://security.netapp.com/advisory/ntap-20230616-0002/https://www.debian.org/security/2023/dsa-5402https://www.openwall.com/lists/oss-security/2023/05/08/4http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.htmlhttp://www.openwall.com/lists/oss-security/2023/05/15/5https://bugzilla.redhat.com/show_bug.cgi?id=2196105https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1592a89942e9678f7d9c8030efa777c0d57edabhttps://github.com/torvalds/linux/commit/c1592a89942e9678f7d9c8030efa777c0d57edabhttps://lists.debian.org/debian-lts-announce/2023/06/msg00008.htmlhttps://lists.debian.org/debian-lts-announce/2023/07/msg00030.htmlhttps://news.ycombinator.com/item?id=35879660https://security.netapp.com/advisory/ntap-20230616-0002/https://www.debian.org/security/2023/dsa-5402https://www.openwall.com/lists/oss-security/2023/05/08/4
2023-05-08
Published
Exploited in the wild