Expired Pointer Dereference Affecting kernel6.12-debuginfo-common-aarch64 package, versions <1:6.12.103-127.188.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-AMZN2023-KERNEL612DEBUGINFOCOMMONAARCH64-19476462
  • published1 Sept 2026
  • disclosed15 Aug 2026

Introduced: 15 Aug 2026

NewCVE-2026-74512  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel6.12-debuginfo-common-aarch64 to version 1:6.12.103-127.188.amzn2023 or higher.
This issue was patched in ALAS2023-2026-2110.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel6.12-debuginfo-common-aarch64 package and not the kernel6.12-debuginfo-common-aarch64 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:

audit: fix potential use-after-free in audit_del_rule()

audit_del_rule() destroys e-&gt;rule.exe via audit_remove_mark_rule() before unlinking the rule from RCU-visible filter lists and waiting for a grace period. Concurrent readers in audit_filter() and audit_filter_rules() still dereference e-&gt;rule.exe, while the fsnotify mark can be freed on an independent lifetime path. This creates a use-after-free window during rule deletion.

Fix this by unlinking the rule from the RCU-visible lists and invoking synchronize_rcu() before calling audit_remove_mark_rule() (and other rule removal helpers). This ensures that all existing RCU readers have exited the critical section before any underlying resources are destroyed.

CVSS Base Scores

version 3.1