CVE-2023-52940

MEDIUM

Linux Kernel 6.1-6.1.10 - Denial of Service via Multi-Gen LRU Cgroup Migration Race Condition

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: mm: multi-gen LRU: fix crash during cgroup migration lru_gen_migrate_mm() assumes lru_gen_add_mm() runs prior to itself. This isn't true for the following scenario: CPU 1 CPU 2 clone() cgroup_can_fork() cgroup_procs_write() cgroup_post_fork() task_lock() lru_gen_migrate_mm() task_unlock() task_lock() lru_gen_add_mm() task_unlock() And when the above happens, kernel crashes because of linked list corruption (mm_struct->lru_gen.list).

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/04448022311cebd30969d3aebdde765f1258b360

Patch

https://git.kernel.org/stable/c/de08eaa6156405f2e9369f06ba5afae0e4ab3b62

Scores

CVSS v3 5.5

EPSS 0.0020

EPSS Percentile 9.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published

Products (9)

linux/Kernel 6.1.0 - 6.1.11linux

Linux/Linux < 6.1

Linux/Linux 6.1

Linux/Linux 6.1.11 - 6.1.*

Linux/Linux 6.2

Linux/Linux bd74fdaea146029e4fa12c6de89adbe0779348a9 - 04448022311cebd30969d3aebdde765f1258b360

Linux/Linux bd74fdaea146029e4fa12c6de89adbe0779348a9 - de08eaa6156405f2e9369f06ba5afae0e4ab3b62

linux/linux_kernel 6.2 rc1 (6 CPE variants)

linux/linux_kernel 6.1 - 6.1.11

Published Mar 27, 2025

Tracked Since Feb 18, 2026