SB20260528239 - Improper control of a resource through its lifetime in Linux kernel smack

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Main Vulnerability Database SB20260528239

SB20260528239 - Improper control of a resource through its lifetime in Linux kernel smack

Published: May 28, 2026

Security Bulletin ID SB20260528239
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 control of a resource through its lifetime (CVE-ID: CVE-2025-71304)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

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 state management in /smack/doi handling when reusing a previously written DOI value. A local user can write a previously used value to /smack/doi to cause a denial of service.

Networking for non-ambient labels is disrupted because the default IPv4 domain map is not restored.


Remediation

Install update from vendor's website.

References