Linux kernel DRM AMD display DPMS null deref & redundant link usage
CVE-2026-98926 Published on October 23, 2026

drm/amd/display: Remove sink usage from DPMS
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Remove sink usage from DPMS [Why] stream->sink is optional and can be null, so should always be checked before dereference. Additionally, most of its usage in DPMS sequences is for stream->sink->link, which can be replaced with stream->link, as the two should always be the same. [How] * Replace stream->sink->link in DPMS on/off * Add assert to USB4 BW allocation where sink is required * Avoid inconsistencies in resource access, e.g. don't repeat stream->link after it was already saved to a local variable * Pull out effective VPG calculation to helper getter * Formatting fixes

NVD

Products Associated with CVE-2026-98926

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Affected Versions

• Version 052fa7e8c9a92e3804ba9dba7c2550a9684d3441 and below 0b1eebd359685dd681f6e0df5540a5bb985a27bf is affected.
• Version 052fa7e8c9a92e3804ba9dba7c2550a9684d3441 and below 8fa813b7fd1eccbed13e126166cf764f1f11a7d3 is affected.

• Version 5.3 is affected.
• Before 5.3 is unaffected.
• Version 7.2.9, <= 7.2.* is unaffected.
• Version 7.3, <= * is unaffected.