CVE-2026-68364drm/amd/display: Fix ISM dc_lock deadlock during suspend
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 754003486c3cc95f2fcb9d6b71a779047d6db95c builds before 95776812e6b8f908563e8994d5d947b68baf68a6; 754003486c3cc95f2fcb9d6b71a779047d6db95c builds before 3714fe242592e3699ac5e2c19d68b275a210be7d | CNA record |
References
- https://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d947b68baf68a6
- https://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d68b275a210be7d
The CVE record on cve.org NVD's entry
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