High 7.8Published Sep 17, 2026

CVE-2026-90289drm/amd/display: Resize MST HDCP per-connector arrays to 32

Updated under an hour ago (2026-10-19 07:10 UTC)

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	82986fd631fa04bcedaefe11a6b3767601cbe84f builds before 562d24ac214ba9530d88841088eb6adce5c537b5; 82986fd631fa04bcedaefe11a6b3767601cbe84f builds before 0fa116a17b69a28712cdf209318e345b676d7f6c; 82986fd631fa04bcedaefe11a6b3767601cbe84f builds before 261e0fe4e2c99f687114b64b10b98db964b475f4; 99c444d3c3c43db354b253d9bfac081073dcb484; d90f97cb3821c47bdf773dcf6cade143773ec764; from 5.15.128 before 5.16; from 6.1.47 before 6.2	CNA record

References

https://git.kernel.org/stable/c/562d24ac214ba9530d88841088eb6adce5c537b5
https://git.kernel.org/stable/c/0fa116a17b69a28712cdf209318e345b676d7f6c
https://git.kernel.org/stable/c/261e0fe4e2c99f687114b64b10b98db964b475f4

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.