Improper Update of Reference Count Affecting kernel-debug-devel-matched package, versions <0:5.14.0-284.11.1.el9_2


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-CENTOS9-KERNELDEBUGDEVELMATCHED-14756851
  • published31 Dec 2025
  • disclosed30 Dec 2025

Introduced: 30 Dec 2025

CVE-2022-50839  (opens in a new tab)
CWE-911  (opens in a new tab)

How to fix?

Upgrade Centos:9 kernel-debug-devel-matched to version 0:5.14.0-284.11.1.el9_2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-devel-matched package and not the kernel-debug-devel-matched package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

jbd2: fix potential buffer head reference count leak

As in 'jbd2_fc_wait_bufs' if buffer isn't uptodate, will return -EIO without update 'journal->j_fc_off'. But 'jbd2_fc_release_bufs' will release buffer head from ‘j_fc_off - 1’ if 'bh' is NULL will terminal release which will lead to buffer head buffer head reference count leak. To solve above issue, update 'journal->j_fc_off' before return -EIO.

CVSS Base Scores

version 3.1