Buffer Access with Incorrect Length Value Affecting kernel6.12-libbpf package, versions <1:6.12.46-66.121.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.08% (24th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNEL612LIBBPF-13168846
  • published1 Oct 2025
  • disclosed26 Aug 2025

Introduced: 26 Aug 2025

CVE-2025-38676  (opens in a new tab)
CWE-805  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel6.12-libbpf to version 1:6.12.46-66.121.amzn2023 or higher.
This issue was patched in ALAS2023-2025-1208.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel6.12-libbpf package and not the kernel6.12-libbpf 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/amd: Avoid stack buffer overflow from kernel cmdline

While the kernel command line is considered trusted in most environments, avoid writing 1 byte past the end of "acpiid" if the "str" argument is maximum length.

CVSS Base Scores

version 3.1