CVE-2026-68364

Published: Ago 10, 2026 Last Modified: Ago 10, 2026
ExploitDB:
Other exploit source:
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Description

AI Translation Available

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.

https://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d6…
https://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d68b275a210be7d
https://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d…
https://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d947b68baf68a6