SB20260325174 - Improper Resource Shutdown or Release in Linux kernel hw mthca driver

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Main Vulnerability Database SB20260325174

SB20260325174 - Improper Resource Shutdown or Release in Linux kernel hw mthca driver

Published: March 25, 2026

Security Bulletin ID SB20260325174
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Resource Shutdown or Release (CVE-ID: CVE-2026-23289)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper resource management in the IB/mthca subsystem when handling system calls. A local user can trigger a failed system call path to disclose sensitive information.

The issue arises from a missing mthca_unmap_user_db() call during error handling in mthca_create_srq(), leading to a resource leak that could expose system memory.


Remediation

Install update from vendor's website.

References