SB2026072168 - Always-Incorrect Control Flow Implementation in Linux kernel drm msm driver

Description

This security bulletin contains information about 1 vulnerability.

1) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-53377)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

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 recovery handling in recover_worker in the drm/msm GPU driver when processing a hung GPU ring with no additional queued work. A local user can trigger a GPU hang to cause a denial of service.

The issue can occur when a single submitted job hangs a ring and the GPU remains in a hung state instead of being recovered.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/01a0d6cd7032e9993feea19fadb03ef9d5b488f2
• https://git.kernel.org/stable/c/132b8d51f0ffbee6e4e1ebbe1a50330aaf2dbd5d
• https://git.kernel.org/stable/c/2f5c90478749dfd9a32386100b6078a364298b01