Information Exposure Affecting kernel-libbpf package, versions <1:6.1.150-174.273.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (9th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELLIBBPF-13166811
  • published1 Oct 2025
  • disclosed5 Sept 2025

Introduced: 5 Sep 2025

CVE-2025-39702  (opens in a new tab)
CWE-208  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-libbpf to version 1:6.1.150-174.273.amzn2023 or higher.
This issue was patched in ALAS2023-2025-1186.

NVD Description

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

ipv6: sr: Fix MAC comparison to be constant-time

To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.

CVSS Base Scores

version 3.1