SB20260424291 - Memory leak in Linux kernel btrfs

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260424291

SB20260424291 - Memory leak in Linux kernel btrfs

Published: April 24, 2026

Security Bulletin ID SB20260424291
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Memory leak (CVE-ID: CVE-2026-31434)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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 memory leak in create_space_info_sub_group() and check_removing_space_info() when removing sub-group space_info sysfs objects. A local user can trigger creation and removal of these elements to cause a denial of service.

The issue can be reproduced with the blktests zbd/009 test case on systems built with CONFIG_DEBUG_KMEMLEAK.


Remediation

Install update from vendor's website.

References