NULL Pointer Dereference Affecting kernel-libbpf-static package, versions <0:6.12.29-33.102.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELLIBBPFSTATIC-10339648
  • published11 Jun 2025
  • disclosed6 Mar 2025

Introduced: 6 Mar 2025

CVE-2025-21833  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-libbpf-static to version 0:6.12.29-33.102.amzn2023 or higher.
This issue was patched in ALAS2023-2025-994.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-libbpf-static package and not the kernel-libbpf-static 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:

iommu/vt-d: Avoid use of NULL after WARN_ON_ONCE

There is a WARN_ON_ONCE to catch an unlikely situation when domain_remove_dev_pasid can't find the pasid. In case it nevertheless happens we must avoid using a NULL pointer.

CVSS Base Scores

version 3.1