CVE-2026-68364
- Source
- https://cve.org/CVERecord?id=CVE-2026-68364
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68364.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-68364
- Downstream
- Published
- 2026-08-10T12:03:41Z
- Modified
- 2026-08-20T03:30:45Z
- Summary
- drm/amd/display: Fix ISM dc_lock deadlock during suspend
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix ISM dc_lock deadlock during suspend
[Why] System hang observed during suspend/resume while video is playing. amdgpu_dm_ism_disable() is called under dc_lock and waits for ISM delayed work via disable_delayed_work_sync(). The work handlers themselves take dc_lock, producing an ABBA deadlock when a worker is in flight at suspend time.
[How] Split the disable path into two phases with opposite locking contracts:
- amdgpu_dm_ism_disable() -- quiesces workers, must NOT hold dc_lock.
- amdgpu_dm_ism_force_full_power() (new) -- drives the ISM FSM back to FULL_POWER_RUNNING, must hold dc_lock.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68364.json" }- References
-
- https://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d68b275a210be7d
- https://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d947b68baf68a6
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68364.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-68364
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git