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. amdgpudmismdisable() is called under dclock and waits for ISM delayed work via disabledelayedworksync(). The work handlers themselves take dclock, 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. amdgpudmismdisable() -- quiesces workers, must NOT hold dclock. 2. amdgpudmismforcefullpower() (new) -- drives the ISM FSM back to FULLPOWERRUNNING, must hold dclock.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68364.json",
"cna_assigner": "Linux"
}