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CVE-2026-68364

drm/amd/display: Fix ISM dc_lock deadlock during suspend

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 754003486c3cc95f2fcb9d6b71a779047d6db95c
Version < 95776812e6b8f908563e8994d5d947b68baf68a6
Status affected
Version 754003486c3cc95f2fcb9d6b71a779047d6db95c
Version < 3714fe242592e3699ac5e2c19d68b275a210be7d
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 7.1
Status affected
Version 0
Version < 7.1
Status unaffected
Version <= 7.1.*
Version 7.1.6
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.059
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d947b68baf68a6
https://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d68b275a210be7d