Bug 2540549 (CVE-2026-97431) - CVE-2026-97431 kernel: drm/amd/display: Avoid DPMS-on for phantom stream
Summary: CVE-2026-97431 kernel: drm/amd/display: Avoid DPMS-on for phantom stream
Keywords:
Status: NEW
Alias: CVE-2026-97431
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 17:12 UTC by OSIDB Bzimport
Modified: 2026-09-29 13:11 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-24 17:12:51 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Avoid DPMS-on for phantom stream

[Why & How]
Calling dc_update_planes_and_stream separately for stream and its
phantom stream causes a NULL pointer dereference, since the phantom is
destroyed on the first call.

Skip the call for phantom streams.
Comment 1 Mauro Matteo Cascella 2026-09-29 12:59:21 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97431.mbox
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