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.
References6
- git.kernel.org/stable/c/0fa116a17b69a28712cdf209318e345b676d7f6c
- git.kernel.org/stable/c/1c22294c7d9b3b1c26a18ca4eca8c863a5a0d907
- git.kernel.org/stable/c/261e0fe4e2c99f687114b64b10b98db964b475f4
- git.kernel.org/stable/c/562d24ac214ba9530d88841088eb6adce5c537b5
- git.kernel.org/stable/c/ac490fea9fe74f9d9975c5d8250c8719750589cd
- git.kernel.org/stable/c/decea8279bec5a35413b2cb8e36951cca308fac0
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 8 November 2026
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