SB20260720352 - Use-after-free in Linux kernel i915 gem driver

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Main Vulnerability Database SB20260720352

SB20260720352 - Use-after-free in Linux kernel i915 gem driver

Published: July 20, 2026

Security Bulletin ID SB20260720352
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) Use-after-free (CVE-ID: CVE-2026-63884)

CWE-ID: CWE-416 - Use After Free

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 a use-after-free in the i915 TTM object purge logic when purging an object during eviction after validating buffer object placement. A local user can trigger the purge path through crafted GPU memory management operations to cause a denial of service.

The issue was reported under heavy use on DG2 systems and occurs because the associated i915 TTM page vector container may be replaced while the object is still busy.


Remediation

Install update from vendor's website.

References