High severity7.8NVD Advisory· Published Sep 17, 2026· Updated Oct 30, 2026
CVE-2026-90289
CVE-2026-90289
Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Resize MST HDCP per-connector arrays to 32
AMDGPU_DM_MAX_DISPLAY_INDEX is 31. It suggest a maximum number of 32 connectors. But the way it's used is like MAX_DISPLAY_COUNT. Hence we're off by one with DRM core, which supports a max of 32 connectors.
Rename AMDGPU_DM_MAX_DISPLAY_INDEX to AMDGPU_DM_MAX_DISPLAY_COUNT to match its actual use, and increase the size to 32 to match the originally intended size.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- osv-coords2 versions
< 6.1.191+ 1 more
- (no CPE)range: < 6.1.191
- (no CPE)range: < 7.2.7-1.1
Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/0fa116a17b69a28712cdf209318e345b676d7f6cnvd
- git.kernel.org/stable/c/1c22294c7d9b3b1c26a18ca4eca8c863a5a0d907nvd
- git.kernel.org/stable/c/261e0fe4e2c99f687114b64b10b98db964b475f4nvd
- git.kernel.org/stable/c/562d24ac214ba9530d88841088eb6adce5c537b5nvd
- git.kernel.org/stable/c/ac490fea9fe74f9d9975c5d8250c8719750589cdnvd
- git.kernel.org/stable/c/decea8279bec5a35413b2cb8e36951cca308fac0nvd
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