CVE-2026-90289
drm/amd/display: Resize MST HDCP per-connector arrays to 32
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
| Last Updated | Oct 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
d90f97cb3821c47bdf773dcf6cade143773ec764 < 1c22294c7d9b3b1c26a18ca4eca8c863a5a0d907 82986fd631fa04bcedaefe11a6b3767601cbe84f < decea8279bec5a35413b2cb8e36951cca308fac0 82986fd631fa04bcedaefe11a6b3767601cbe84f < ac490fea9fe74f9d9975c5d8250c8719750589cd 82986fd631fa04bcedaefe11a6b3767601cbe84f < 562d24ac214ba9530d88841088eb6adce5c537b5 82986fd631fa04bcedaefe11a6b3767601cbe84f < 0fa116a17b69a28712cdf209318e345b676d7f6c 82986fd631fa04bcedaefe11a6b3767601cbe84f < 261e0fe4e2c99f687114b64b10b98db964b475f4 99c444d3c3c43db354b253d9bfac081073dcb484 6.1.47 < 6.1.191 5.15.128 < 5.16
Linux / Linux
6.3
References
git.kernel.org: https://git.kernel.org/stable/c/1c22294c7d9b3b1c26a18ca4eca8c863a5a0d907 git.kernel.org: https://git.kernel.org/stable/c/decea8279bec5a35413b2cb8e36951cca308fac0 git.kernel.org: https://git.kernel.org/stable/c/ac490fea9fe74f9d9975c5d8250c8719750589cd git.kernel.org: https://git.kernel.org/stable/c/562d24ac214ba9530d88841088eb6adce5c537b5 git.kernel.org: https://git.kernel.org/stable/c/0fa116a17b69a28712cdf209318e345b676d7f6c git.kernel.org: https://git.kernel.org/stable/c/261e0fe4e2c99f687114b64b10b98db964b475f4