SB20260424272 - Race condition in Linux kernel xfs

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Main Vulnerability Database SB20260424272

SB20260424272 - Race condition in Linux kernel xfs

Published: April 24, 2026

Security Bulletin ID SB20260424272
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-31455)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in xfs_unmount_flush_inodes() when unmounting an XFS filesystem while background reclaim and inodegc are still running. A local user can trigger filesystem unmount operations to cause a denial of service.

The issue occurs because inodegc can dirty and insert inodes into the AIL during the flush, while background reclaim can race to abort and free dirty inodes.


Remediation

Install update from vendor's website.

References