SB20260528121 - Improper update of reference count in Linux kernel hfsplus

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Main Vulnerability Database SB20260528121

SB20260528121 - Improper update of reference count in Linux kernel hfsplus

Published: May 28, 2026

Security Bulletin ID SB20260528121
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 update of reference count (CVE-ID: CVE-2026-45960)

CWE-ID: CWE-911 - Improper Update of Reference Count

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 reference count handling in hfs_bnode_create() when creating a btree node on a corrupted hfsplus filesystem. A local user can trigger node allocation for an already hashed node to cause a denial of service.

This can occur if filesystem corruption causes a node that is already in use to appear available.


Remediation

Install update from vendor's website.

References