Improper Update of Reference Count Affecting perf package, versions <0:6.1.19-30.43.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-AMZN2023-PERF-13551484
  • published15 Oct 2025
  • disclosed18 Sept 2025

Introduced: 18 Sep 2025

NewCVE-2023-53381  (opens in a new tab)
CWE-911  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perf to version 0:6.1.19-30.43.amzn2023 or higher.
This issue was patched in ALAS2023-2023-138.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf 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:

NFSD: fix leaked reference count of nfsd4_ssc_umount_item

The reference count of nfsd4_ssc_umount_item is not decremented on error conditions. This prevents the laundromat from unmounting the vfsmount of the source file.

This patch decrements the reference count of nfsd4_ssc_umount_item on error.

CVSS Base Scores

version 3.1