CVE-2025-38727
published 2025-09-04CVE-2025-38727: In the Linux kernel, the following vulnerability has been resolved: netlink: avoid infinite retry looping in netlink_unicast() netlink_attachskb() checks for…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.17%
6.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
netlink: avoid infinite retry looping in netlink_unicast()
netlink_attachskb() checks for the socket's read memory allocation
constraints. Firstly, it has:
rmem sk_rcvbuf)
to check if the just increased rmem value fits into the socket's receive
buffer. If not, it proceeds and tries to wait for the memory under:
rmem + skb->truesize > READ_ONCE(sk->sk_rcvbuf)
The checks don't cover the case when skb->truesize + sk->sk_rmem_alloc is
equal to sk->sk_rcvbuf. Thus the function neither successfully accepts
these conditions, nor manages to reschedule the task - and is called in
retry loop for indefinite time which is caught as:
rcu: INFO: rcu_sched self-detected stall on CPU
rcu: 0-....: (25999 ticks this GP) idle=ef2/1/0x4000000000000000 softirq=262269/262269 fqs=6212
(t=26000 jiffies g=230833 q=259957)
NMI backtrace for cpu 0
CPU: 0 PID: 22 Comm: kauditd Not tainted 5.10.240 #68
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc42 04/01/2014
Call Trace:
dump_stack lib/dump_stack.c:120
nmi_cpu_backtrace.cold lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace lib/nmi_backtrace.c:62
rcu_dump_cpu_stacks kernel/rcu/tree_stall.h:335
rcu_sched_clock_irq.cold kernel/rcu/tree.c:2590
update_process_times kernel/time/timer.c:1953
tick_sched_handle kernel/time/tick-sched.c:227
tick_sched_timer kernel/time/tick-sched.c:1399
__hrtimer_run_queues kernel/time/hrtimer.c:1652
hrtimer_interrupt kernel/time/hrtimer.c:1717
__sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113
asm_call_irq_on_stack arch/x86/entry/entry_64.S:808
netlink_attachskb net/netlink/af_netlink.c:1234
netlink_unicast net/netlink/af_netlink.c:1349
kauditd_send_queue kernel/audit.c:776
kauditd_thread kernel/audit.c:897
kthread kernel/kthread.c:328
ret_from_fork arch/x86/entry/entry_64.S:304
Restore the original behavior of the check which commit in Fixes
accidentally missed when restructuring the code.
Found b
Affected
36 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.153-1 (bookworm) | linux 6.1.153-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.153-1 (bookworm) | linux 6.1.153-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 4b8e18af7bea92f8b7fb92d40aeae729209db250 < 44ddd7b1ae0b7edb2c832eb16798c827a05e58f0 | 44ddd7b1ae0b7edb2c832eb16798c827a05e58f0 |
| linux | linux | >= 5.10.240 < 5.10.241 | 5.10.241 |
| linux | linux | >= 5.15.189 < 5.15.190 | 5.15.190 |
| linux | linux | >= 5.4.296 < 5.4.297 | 5.4.297 |
| linux | linux | >= 55baecb9eb90238f60a8350660d6762046ebd3bd < 346c820ef5135cf062fa3473da955ef8c5fb6929 | 346c820ef5135cf062fa3473da955ef8c5fb6929 |
| linux | linux | >= 6.1.146 < 6.1.149 | 6.1.149 |
| linux | linux | >= 6.12.39 < 6.12.43 | 6.12.43 |
| linux | linux | >= 6.15.7 < 6.15.11 | 6.15.11 |
| linux | linux | >= 6.6.99 < 6.6.103 | 6.6.103 |
| linux | linux | >= 76602d8e13864524382b0687dc32cd8f19164d5a < d42b71a34f6b8a2d5c53df81169b03b8d8b5cf4e | d42b71a34f6b8a2d5c53df81169b03b8d8b5cf4e |
| linux | linux | >= 9da025150b7c14a8390fc06aea314c0a4011e82c < 47d49fd07f86d1f55ea1083287303d237e9e0922 | 47d49fd07f86d1f55ea1083287303d237e9e0922 |
| linux | linux | >= ae8f160e7eb24240a2a79fc4c815c6a0d4ee16cc < e8edc7de688791a337c068693f22e8d8b869df71 | e8edc7de688791a337c068693f22e8d8b869df71 |
| linux | linux | >= ae8f160e7eb24240a2a79fc4c815c6a0d4ee16cc < 759dfc7d04bab1b0b86113f1164dc1fec192b859 | 759dfc7d04bab1b0b86113f1164dc1fec192b859 |
| linux | linux | >= c4ceaac5c5ba0b992ee1dc88e2a02421549e5c98 < 6bee383ff83352a693d03efdf27cdd80742f71b2 | 6bee383ff83352a693d03efdf27cdd80742f71b2 |
| linux | linux | >= cd7ff61bfffd7000143c42bbffb85eeb792466d6 < 78fcd69d55c5f11d7694c547eca767a1cfd38ec4 | 78fcd69d55c5f11d7694c547eca767a1cfd38ec4 |
| linux | linux | >= fd69af06101090eaa60b3d216ae715f9c0a58e5b < f324959ad47e62e3cadaffa65d3cff790fb48529 | f324959ad47e62e3cadaffa65d3cff790fb48529 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu5.5MEDIUM
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OSV
linux-kvm vulnerabilities
osv·2025-12-15·CVSS 5.5
CVE-2025-40300 [MEDIUM] linux-kvm vulnerabilities
linux-kvm vulnerabilities
Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
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:
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- ACPI drivers;
- ATM drivers;
- DRBD Distributed R
OSV
linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx, linux-raspi vulnerabilities
osv·2025-11-04·CVSS 5.5
CVE-2024-26700 [MEDIUM] linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx, linux-raspi vulnerabilities
linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx, linux-raspi vulnerabilities
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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
OSV
linux-intel-iotg, linux-intel-iotg-5.15 vulnerabilities
osv·2025-10-28·CVSS 5.5
CVE-2024-26700 [MEDIUM] linux-intel-iotg, linux-intel-iotg-5.15 vulnerabilities
linux-intel-iotg, linux-intel-iotg-5.15 vulnerabilities
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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
OSV
linux-aws-5.15 vulnerabilities
osv·2025-10-27·CVSS 5.5
CVE-2024-26700 [MEDIUM] linux-aws-5.15 vulnerabilities
linux-aws-5.15 vulnerabilities
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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
OSV
linux-azure, linux-azure-5.15, linux-gcp-5.15 vulnerabilities
osv·2025-10-22·CVSS 5.5
CVE-2024-26700 [MEDIUM] linux-azure, linux-azure-5.15, linux-gcp-5.15 vulnerabilities
linux-azure, linux-azure-5.15, linux-gcp-5.15 vulnerabilities
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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
OSV
linux-fips, linux-aws-fips, linux-azure-fips, linux-gcp-fips, linux-intel-iot-realtime, linux-realtime vulnerabilities
osv·2025-10-20·CVSS 5.5
CVE-2024-26700 [MEDIUM] linux-fips, linux-aws-fips, linux-azure-fips, linux-gcp-fips, linux-intel-iot-realtime, linux-realtime vulnerabilities
linux-fips, linux-aws-fips, linux-azure-fips, linux-gcp-fips, linux-intel-iot-realtime, linux-realtime vulnerabilities
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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
OSV
linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-xilinx
osv·2025-10-20·CVSS 5.5
CVE-2024-26700 [MEDIUM] linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-xilinx
linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-xilinx-zynqmp vulnerabilities
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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
GHSA
GHSA-5j63-8q43-chww: In the Linux kernel, the following vulnerability has been resolved:
netlink: avoid infinite retry looping in netlink_unicast()
netlink_attachskb() c
ghsa_unreviewed·2025-09-05
CVE-2025-38727 [MEDIUM] CWE-835 GHSA-5j63-8q43-chww: In the Linux kernel, the following vulnerability has been resolved:
netlink: avoid infinite retry looping in netlink_unicast()
netlink_attachskb() c
In the Linux kernel, the following vulnerability has been resolved:
netlink: avoid infinite retry looping in netlink_unicast()
netlink_attachskb() checks for the socket's read memory allocation
constraints. Firstly, it has:
rmem sk_rcvbuf)
to check if the just increased rmem value fits into the socket's receive
buffer. If not, it proceeds and tries to wait for the memory under:
rmem + skb->truesize > READ_ONCE(sk->sk_rcvbuf)
The checks don't cover the case when skb->truesize + sk->sk_rmem_alloc is
equal to sk->sk_rcvbuf. Thus the function neither successfully accepts
these conditions, nor manages to reschedule the task - and is called in
retry loop for indefinite time which is caught as:
rcu: INFO: rcu_sched self-detected stall on CPU
rcu: 0-....: (25999 ticks this GP) idle=ef2/1/0x
OSV
CVE-2025-38727: In the Linux kernel, the following vulnerability has been resolved: netlink: avoid infinite retry looping in netlink_unicast() netlink_attachskb() che
osv·2025-09-04·CVSS 5.5
CVE-2025-38727 [MEDIUM] CVE-2025-38727: In the Linux kernel, the following vulnerability has been resolved: netlink: avoid infinite retry looping in netlink_unicast() netlink_attachskb() che
In the Linux kernel, the following vulnerability has been resolved: netlink: avoid infinite retry looping in netlink_unicast() netlink_attachskb() checks for the socket's read memory allocation constraints. Firstly, it has: rmem sk_rcvbuf) to check if the just increased rmem value fits into the socket's receive buffer. If not, it proceeds and tries to wait for the memory under: rmem + skb->truesize > READ_ONCE(sk->sk_rcvbuf) The checks don't cover the case when skb->truesize + sk->sk_rmem_alloc is equal to sk->sk_rcvbuf. Thus the function neither successfully accepts these conditions, nor manages to reschedule the task - and is called in retry loop for indefinite time which is caught as: rcu: INFO: rcu_sched self-detected stall on CPU rcu: 0-....: (25999 ticks this GP) idle=ef2/1/0x4000000
Ubuntu
Linux kernel (KVM) vulnerabilities
vendor_ubuntu·2025-12-15·CVSS 5.5
CVE-2024-53068 [MEDIUM] Linux kernel (KVM) vulnerabilities
Title: Linux kernel (KVM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
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:
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architec
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-11-04·CVSS 5.5
CVE-2023-52593 [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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, li
Ubuntu
Linux kernel (Intel IoTG) vulnerabilities
vendor_ubuntu·2025-10-28·CVSS 5.5
CVE-2025-38727 [MEDIUM] Linux kernel (Intel IoTG) vulnerabilities
Title: Linux kernel (Intel IoTG) 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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linu
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2025-10-27·CVSS 5.5
CVE-2024-26700 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) 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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-gener
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-10-22·CVSS 5.5
CVE-2024-26700 [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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, li
Ubuntu
Linux kernel (FIPS and Real-time) vulnerabilities
vendor_ubuntu·2025-10-20·CVSS 5.5
CVE-2025-38727 [MEDIUM] Linux kernel (FIPS and Real-time) vulnerabilities
Title: Linux kernel (FIPS and Real-time) 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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e
Red Hat
kernel: netlink: avoid infinite retry looping in netlink_unicast()
vendor_redhat·2025-09-04·CVSS 5.5
CVE-2025-38727 [MEDIUM] CWE-606 kernel: netlink: avoid infinite retry looping in netlink_unicast()
kernel: netlink: avoid infinite retry looping in netlink_unicast()
In the Linux kernel, the following vulnerability has been resolved:
netlink: avoid infinite retry looping in netlink_unicast()
netlink_attachskb() checks for the socket's read memory allocation
constraints. Firstly, it has:
rmem sk_rcvbuf)
to check if the just increased rmem value fits into the socket's receive
buffer. If not, it proceeds and tries to wait for the memory under:
rmem + skb->truesize > READ_ONCE(sk->sk_rcvbuf)
The checks don't cover the case when skb->truesize + sk->sk_rmem_alloc is
equal to sk->sk_rcvbuf. Thus the function neither successfully accepts
these conditions, nor manages to reschedule the task - and is called in
retry loop for indefinite time which is caught as:
rcu: INFO: rcu_sched self-detected
Debian
CVE-2025-38727: linux - In the Linux kernel, the following vulnerability has been resolved: netlink: av...
vendor_debian·2025·CVSS 5.5
CVE-2025-38727 [MEDIUM] CVE-2025-38727: linux - In the Linux kernel, the following vulnerability has been resolved: netlink: av...
In the Linux kernel, the following vulnerability has been resolved: netlink: avoid infinite retry looping in netlink_unicast() netlink_attachskb() checks for the socket's read memory allocation constraints. Firstly, it has: rmem sk_rcvbuf) to check if the just increased rmem value fits into the socket's receive buffer. If not, it proceeds and tries to wait for the memory under: rmem + skb->truesize > READ_ONCE(sk->sk_rcvbuf) The checks don't cover the case when skb->truesize + sk->sk_rmem_alloc is equal to sk->sk_rcvbuf. Thus the function neither successfully accepts these conditions, nor manages to reschedule the task - and is called in retry loop for indefinite time which is caught as: rcu: INFO: rcu_sched self-detected stall on CPU rcu: 0-....: (25999 ticks this GP) idle=ef2/1/0x4000000
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/346c820ef5135cf062fa3473da955ef8c5fb6929https://git.kernel.org/stable/c/44ddd7b1ae0b7edb2c832eb16798c827a05e58f0https://git.kernel.org/stable/c/47d49fd07f86d1f55ea1083287303d237e9e0922https://git.kernel.org/stable/c/6bee383ff83352a693d03efdf27cdd80742f71b2https://git.kernel.org/stable/c/759dfc7d04bab1b0b86113f1164dc1fec192b859https://git.kernel.org/stable/c/78fcd69d55c5f11d7694c547eca767a1cfd38ec4https://git.kernel.org/stable/c/d42b71a34f6b8a2d5c53df81169b03b8d8b5cf4ehttps://git.kernel.org/stable/c/e8edc7de688791a337c068693f22e8d8b869df71https://git.kernel.org/stable/c/f324959ad47e62e3cadaffa65d3cff790fb48529https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlhttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-032379.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
2025-09-04
Published