SB2026091984 - Memory leak in Linux kernel mlx5 core driver

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026091984

SB2026091984 - Memory leak in Linux kernel mlx5 core driver

Published: September 19, 2026

Security Bulletin ID SB2026091984
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) Memory leak (CVE-ID: CVE-2026-90128)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service through memory resource exhaustion.

The vulnerability exists due to improper resource cleanup in add_direct_chain() in the vdpa/mlx5 memory-region handling code when handling allocation errors while creating a direct memory-region chain. A local user can trigger an allocation error to cause a denial of service through memory resource exhaustion.

Newly allocated direct memory-region entries are kept on a temporary list until the operation succeeds.


Remediation

Install update from vendor's website.

References