Memory Leak Affecting kernel-debuginfo package, versions <0:6.1.129-138.220.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELDEBUGINFO-10338312
  • published11 Jun 2025
  • disclosed27 Feb 2025

Introduced: 27 Feb 2025

CVE-2025-21745  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-debuginfo to version 0:6.1.129-138.220.amzn2023 or higher.
This issue was patched in ALAS2023-2025-876.

NVD Description

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

blk-cgroup: Fix class @block_class's subsystem refcount leakage

blkcg_fill_root_iostats() iterates over @block_class's devices by class_dev_iter_(init|next)(), but does not end iterating with class_dev_iter_exit(), so causes the class's subsystem refcount leakage.

Fix by ending the iterating with class_dev_iter_exit().

CVSS Base Scores

version 3.1