CVEvulnerability
CVE-2026-90289
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-09-17
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
- https://git.kernel.org/stable/c/0fa116a17b69a28712cdf209318e345b676d7f6c git.kernel.org
- https://git.kernel.org/stable/c/261e0fe4e2c99f687114b64b10b98db964b475f4 git.kernel.org
- https://git.kernel.org/stable/c/562d24ac214ba9530d88841088eb6adce5c537b5 git.kernel.org
- https://git.kernel.org/stable/c/ac490fea9fe74f9d9975c5d8250c8719750589cd git.kernel.org
- https://git.kernel.org/stable/c/decea8279bec5a35413b2cb8e36951cca308fac0 git.kernel.org