CVE-2026-43407
published 2026-05-08CVE-2026-43407: In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply() This patch fixes an…
PriorityP352critical9.1CVSS 3.1
AVNACLPRNUINSUCHINAH
EPSS
0.54%
42.0th percentile
In the Linux kernel, the following vulnerability has been resolved:
libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
This patch fixes an out-of-bounds access in ceph_handle_auth_reply()
that can be triggered by a message of type CEPH_MSG_AUTH_REPLY. In
ceph_handle_auth_reply(), the value of the payload_len field of such a
message is stored in a variable of type int. A value greater than
INT_MAX leads to an integer overflow and is interpreted as a negative
value. This leads to decrementing the pointer address by this value and
subsequently accessing it because ceph_decode_need() only checks that
the memory access does not exceed the end address of the allocation.
This patch fixes the issue by changing the data type of payload_len to
u32. Additionally, the data type of result_msg_len is changed to u32,
as it is also a variable holding a non-negative length.
Also, an additional layer of sanity checks is introduced, ensuring that
directly after reading it from the message, payload_len and
result_msg_len are not greater than the overall segment length.
BUG: KASAN: slab-out-of-bounds in ceph_handle_auth_reply+0x642/0x7a0 [libceph]
Read of size 4 at addr ffff88811404df14 by task kworker/20:1/262
CPU: 20 UID: 0 PID: 262 Comm: kworker/20:1 Not tainted 6.19.2 #5 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: ceph-msgr ceph_con_workfn [libceph]
Call Trace:
dump_stack_lvl+0x76/0xa0
print_report+0xd1/0x620
? __pfx__raw_spin_lock_irqsave+0x10/0x10
? kasan_complete_mode_report_info+0x72/0x210
kasan_report+0xe7/0x130
? ceph_handle_auth_reply+0x642/0x7a0 [libceph]
? ceph_handle_auth_reply+0x642/0x7a0 [libceph]
__asan_report_load_n_noabort+0xf/0x20
ceph_handle_auth_reply+0x642/0x7a0 [libceph]
mon_dispatch+0x973/0x23d0 [libceph]
? apparmor_socket_recvmsg+0x6b/0xa0
? __pfx_mon_dispatch+0x10/0x10 [libceph]
? __kasan_check_write+0x14/0x30i
? mutex_unlock+0x7f/0xd0
? __pfx_mutex_unlo
Affected
67 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc < ea080b21092590122c3f971cf588932cdbf47847 | ea080b21092590122c3f971cf588932cdbf47847 |
| linux | linux | >= 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc < edc678e5cd11730a2834b43071d8923f05bc334d | edc678e5cd11730a2834b43071d8923f05bc334d |
| linux | linux | >= 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc < 6cee34d6669fe176b4259131adb1a145c939b472 | 6cee34d6669fe176b4259131adb1a145c939b472 |
| linux | linux | >= 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc < 8bb87547e92dcf0928ed763c60e0ac8d733c3656 | 8bb87547e92dcf0928ed763c60e0ac8d733c3656 |
| linux | linux | >= 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc < ed024d2f4c79c0eb2464df0fb640610ac301f9a0 | ed024d2f4c79c0eb2464df0fb640610ac301f9a0 |
| linux | linux | >= 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc < f9da5c1bbac5c8e33259fe00ed7347438fffa969 | f9da5c1bbac5c8e33259fe00ed7347438fffa969 |
| linux | linux | >= 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc < 9f9e2297f45fc2d2524eb104c289d69ddef95665 | 9f9e2297f45fc2d2524eb104c289d69ddef95665 |
| linux | linux | >= 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc < b282c43ed156ae15ea76748fc15cd5c39dc9ab72 | b282c43ed156ae15ea76748fc15cd5c39dc9ab72 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 2.6.34.1 < 5.10.253 | 5.10.253 |
| linux | linux_kernel | >= 5.11 < 5.15.203 | 5.15.203 |
| linux | linux_kernel | >= 5.16 < 6.1.167 | 6.1.167 |
| linux | linux_kernel | >= 6.13 < 6.18.19 | 6.18.19 |
| linux | linux_kernel | >= 6.19 < 6.19.9 | 6.19.9 |
| linux | linux_kernel | >= 6.2 < 6.6.130 | 6.6.130 |
| linux | linux_kernel | >= 6.7 < 6.12.78 | 6.12.78 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
| ubuntu | linux-aws-5.15 | — | — |
| ubuntu | linux-aws-6.8 | — | — |
| ubuntu | linux-aws-fips | — | — |
| ubuntu | linux-azure | — | — |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
vendor_ubuntu8.8HIGH
vendor_redhat7.0MEDIUM
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- Network file system (NFS) server daemon;
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- SCSI subsystem;
- Thermal drivers;
- USB over IP driver;
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Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
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fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284)
It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
flaw is known as Fragnesia. A local attacker could use this to escalate
privileges, or possibly escape a container. (CVE-2026-43503)
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An attacker could possibly use these to compromise the system.
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- Cryptographic API;
- InfiniBand drivers;
- IOMMU subsystem;
- Network drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- x86 platform drivers;
- SCSI subsystem;
- SPI subsystem;
- TCM subsystem;
- USB over IP driver;
- File systems infrastructure;
- HFS+ file system;
- Network file system (NFS) server daemon;
- SMB network file system;
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- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
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- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
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- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
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- DMA engine subsystem;
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- Network drivers;
- NVME drivers;
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
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Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
flaw is known as Fragnesia. A local attacker could use this to escalate
privileges, or possibly escape a container. (CVE-2026-43503)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- USB over IP driver;
- Network file system (NFS) server daemon;
- SMB network file system;
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Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- RISC-V architecture;
- Cryptographic API;
- InfiniBand drivers;
- IOMMU subsystem;
- Network drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- x86 platform drivers;
- SCSI subsystem;
- SPI subsystem;
- TCM subsystem;
- USB over IP driver;
- File systems infrastructure;
- HFS+ file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- IPv6 networking;
- Tracing infrastructure;
- Timer subsystem;
- B.A.T.M.A.N. meshing protocol;
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CVE-2026-43314 [HIGH] Linux kernel (Low Latency) vulnerabilities
Title: Linux kernel (Low Latency) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)
It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
flaw is known as Fragnesia. A local attacker could use this to escalate
privileges, or possibly escape a conta
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vendor_ubuntu·2026-07-02·CVSS 7.8
CVE-2026-43314 [HIGH] Linux kernel (Xilinx) vulnerabilities
Title: Linux kernel (Xilinx) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)
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CVE-2026-43314 Linux kernel (NVIDIA Tegra) vulnerabilities
Title: Linux kernel (NVIDIA Tegra) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardwar
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vendor_ubuntu·2026-07-01·CVSS 4.7
CVE-2025-68214 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- RISC-V architecture;
- Cryptographic API;
- InfiniBand drivers;
- IOMMU subsystem;
- Network drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- x86 platform drivers;
- SCSI subsystem;
- SPI subsystem;
- TCM subsystem;
- USB over IP driver;
- File systems infrastructure;
- HFS+ file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- IPv6 networking;
- Tracing infrastructure;
- Timer subsystem;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Ethernet bridge;
-
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Linux kernel vulnerabilities
vendor_ubuntu·2026-07-01
CVE-2026-43226 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring dr
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vendor_ubuntu·2026-07-01·CVSS 7.1
CVE-2026-43304 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Kernel thread helper (kthread);
- IPv6 networking;
- Tracing infrastructure;
- Kernel exit() syscall;
- Scatterlist API;
- B.A.T.M.A.N. meshi
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vendor_ubuntu·2026-07-01·CVSS 7.1
CVE-2026-43304 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Kernel thread helper (kthread);
- IPv6 networking;
- Tracing infrastructure;
- Kernel exit() syscall;
- Scatterlist API;
- B.A.T.M.A.N. meshing protocol;
- Ethernet br
Red Hat
kernel: libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
vendor_redhat·2026-05-08·CVSS 7.0
CVE-2026-43407 [MEDIUM] CWE-190 kernel: libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
kernel: libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
A flaw was found in the `libceph` component of the Linux kernel. A remote attacker could send a specially crafted `CEPH_MSG_AUTH_REPLY` message with a large `payload_len` value. This could lead to an integer overflow, causing an out-of-bounds memory access. This vulnerability could result in memory corruption, potentially leading to a denial of service or other unpredictable system behavior.
Package: kernel (Red Hat Enterprise Linux 10) - Affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Affected
Package: kernel (Red Hat Enterprise Linux 8) - Affected
Package: kernel-rt (Red Hat En
VulDB
Linux Kernel up to 6.19.8 integer overflow (Nessus ID 313397)
vuldb·2026-05-22·CVSS 9.1
CVE-2026-43407 [CRITICAL] Linux Kernel up to 6.19.8 integer overflow (Nessus ID 313397)
A vulnerability described as critical has been identified in Linux Kernel up to 6.19.8. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to integer overflow.
The identification of this vulnerability is CVE-2026-43407. The attack needs to be done within the local network. There is no exploit available.
Upgrading the affected component is recommended.
GHSA
GHSA-g5m7-8jmr-xx94: In the Linux kernel, the following vulnerability has been resolved:
libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
This pat
ghsa_unreviewed·2026-05-08
CVE-2026-43407 GHSA-g5m7-8jmr-xx94: In the Linux kernel, the following vulnerability has been resolved:
libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
This pat
In the Linux kernel, the following vulnerability has been resolved:
libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
This patch fixes an out-of-bounds access in ceph_handle_auth_reply()
that can be triggered by a message of type CEPH_MSG_AUTH_REPLY. In
ceph_handle_auth_reply(), the value of the payload_len field of such a
message is stored in a variable of type int. A value greater than
INT_MAX leads to an integer overflow and is interpreted as a negative
value. This leads to decrementing the pointer address by this value and
subsequently accessing it because ceph_decode_need() only checks that
the memory access does not exceed the end address of the allocation.
This patch fixes the issue by changing the data type of payload_len to
u32. Additionally, the data type
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/6cee34d6669fe176b4259131adb1a145c939b472https://git.kernel.org/stable/c/8bb87547e92dcf0928ed763c60e0ac8d733c3656https://git.kernel.org/stable/c/9f9e2297f45fc2d2524eb104c289d69ddef95665https://git.kernel.org/stable/c/b282c43ed156ae15ea76748fc15cd5c39dc9ab72https://git.kernel.org/stable/c/ea080b21092590122c3f971cf588932cdbf47847https://git.kernel.org/stable/c/ed024d2f4c79c0eb2464df0fb640610ac301f9a0https://git.kernel.org/stable/c/edc678e5cd11730a2834b43071d8923f05bc334dhttps://git.kernel.org/stable/c/f9da5c1bbac5c8e33259fe00ed7347438fffa969
2026-05-08
Published