SB20260528108 - Missing Release of Resource after Effective Lifetime in Linux kernel sunrpc auth_gss

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Main Vulnerability Database SB20260528108

SB20260528108 - Missing Release of Resource after Effective Lifetime in Linux kernel sunrpc auth_gss

Published: May 28, 2026

Security Bulletin ID SB20260528108
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) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-45964)

CWE-ID: CWE-772 - Missing Release of Resource 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 reference count leak in gss_alloc_msg() in the SUNRPC gss_auth handling code when processing a non-NULL service name and memory allocation fails in kstrdup_const(). A local user can trigger the error path to cause a denial of service.

The issue occurs because the gss_auth reference is not released on the err_put_pipe_version error path, which can prevent the structure from being freed.


Remediation

Install update from vendor's website.

References