CVE-2026-100077: drm/msm: Recover HW before retire hung submit
drm/msm: Recover HW before retire hung submit
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
drm/msmto a version that resolves this vulnerability.Patch 730655
Event History
Frequently Asked Questions
What systems are exposed to this issue?
Systems using the Linux kernel's drm/msm graphics driver are implicated. The issue occurs during GPU recovery after a hung submit, when buffer objects could be freed while the GPU is still accessing them.
What condition is needed to trigger the problem?
A GPU submit must hang and invoke the driver's recovery path. The unsafe condition occurs if that hung submit is retired before GPU recovery has completed.
What can happen if the system is affected?
Retiring the hung submit can trigger buffer-object freeing while the GPU may still be accessing those objects. This can result in GPU page faults.
What does the available fix change?
The fix changes recovery ordering in recover_worker() so GPU recovery completes before hung submits are retired. This avoids freeing buffer objects while the GPU may still access them.