CVE-2026-68364

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: 1. amdgpu_dm_ism_disable() -- quiesces workers, must NOT hold dc_lock. 2. amdgpu_dm_ism_force_full_power() (new) -- drives the ISM FSM back to FULL_POWER_RUNNING, must hold dc_lock.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d68b275a210be7d
https://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d947b68baf68a6

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-10 13:20

Updated : 2026-08-18 07:16

NVD link : CVE-2026-68364

Mitre link : CVE-2026-68364

CVE.ORG link : CVE-2026-68364

JSON object : View

Products Affected

No product.

CWE

No CWE.

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