NULL Pointer Dereference Affecting kernel package, versions <0:4.14.326-245.539.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.17% (6th percentile)

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  • Snyk IDSNYK-AMZN2-KERNEL-14877146
  • published6 Jan 2026
  • disclosed8 Dec 2025

Introduced: 8 Dec 2025

CVE-2023-53766  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel to version 0:4.14.326-245.539.amzn2 or higher.
This issue was patched in ALAS2-2023-2264.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

FS: JFS: Check for read-only mounted filesystem in txBegin

This patch adds a check for read-only mounted filesystem in txBegin before starting a transaction potentially saving from NULL pointer deref.

CVSS Base Scores

version 3.1