SB2026081586 - Resource management error in Linux kernel host1x buffer object cache handling

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Main Vulnerability Database SB2026081586

SB2026081586 - Resource management error in Linux kernel host1x buffer object cache handling

Published: August 15, 2026

Security Bulletin ID SB2026081586
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) Resource management error (CVE-ID: CVE-2026-74381)

CWE-ID: CWE-399 - Resource Management Errors

CVSSv4: 6.8 [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]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper reference count management in host1x buffer object cache handling when pinning and caching buffer object mappings. A local user can trigger caching of a buffer object mapping to cause a denial of service.

The issue stems from a circular reference between cached mappings and the underlying buffer object, which can prevent the buffer object from being freed.


Remediation

Install update from vendor's website.

References