CVE-2023-52940 Affecting kernel-debuginfo package, versions <0:6.1.12-17.42.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (6th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELDEBUGINFO-10336520
  • published11 Jun 2025
  • disclosed27 Mar 2025

Introduced: 27 Mar 2025

CVE-2023-52940  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-debuginfo to version 0:6.1.12-17.42.amzn2023 or higher.
This issue was patched in ALAS2023-2023-132.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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).

CVSS Base Scores

version 3.1