SB20260625229 - Improper control of a resource through its lifetime in Linux kernel drm ttm

Description

This security bulletin contains information about 1 vulnerability.

1) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-52965)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 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/E:U/U:Clear

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

The vulnerability exists due to improper state management in ttm_bo_swapout() LRU list handling when processing swapout failures. A local user can trigger a swapout failure to cause a denial of service.

The issue can cause an infinite LRU walk because the same resource is encountered repeatedly after being moved relative to the walk cursor's hitch node.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0124a09e3e5f5f6080efe9663b27af27933f8382
• https://git.kernel.org/stable/c/b2ed01e7ad3de80333e9b962a44024b094bc0b2b