CVE-2026-68364: drm/amd/display: Fix ISM dc_lock deadlock during suspend

CSIRTS triage

What

AMD display driver deadlocks during suspend due to improper dc_lock handling in ISM.

Who is affected

Systems with AMD Radeon GPUs using the amdgpu display driver.

Urgency

Critical severity (CVSS 9.8); deadlock during suspend impacts system stability and reliability.

Action

Update to a patched Linux kernel version addressing CVE-2026-68364.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

Microsoft Security Response Center (INTL · vendor-psirt · site)

Severity

critical — CVSS 9.8

Published

2026-08-11

Exploitation

Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68364

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-683640.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• unknownCVE-2026-68364: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix ISM d…nvd

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