SB2026050937 - Improper Check or Handling of Exceptional Conditions in Linux kernel btrfs

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Main Vulnerability Database SB2026050937

SB2026050937 - Improper Check or Handling of Exceptional Conditions in Linux kernel btrfs

Published: May 9, 2026

Security Bulletin ID SB2026050937
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) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-43360)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

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 improper handling of name hash collisions in btrfs directory item insertion when creating files with colliding names. A local user can create multiple specially crafted filenames with the same hash to cause a denial of service.

Successful exploitation aborts the transaction and remounts the filesystem read-only.


Remediation

Install update from vendor's website.

References