CVE-2026-90289drm/amd/display: Resize MST HDCP per-connector arrays to 32
- 7.8HighCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 43 days later
· 43 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected d90f97cb3821c47bdf773dcf6cade143773ec764 – < 1c22294c7d9b3b1c26a18ca4eca8c863a5a0d907
- affected 82986fd631fa04bcedaefe11a6b3767601cbe84f – < decea8279bec5a35413b2cb8e36951cca308fac0
- affected 82986fd631fa04bcedaefe11a6b3767601cbe84f – < ac490fea9fe74f9d9975c5d8250c8719750589cd
- affected 82986fd631fa04bcedaefe11a6b3767601cbe84f – < 562d24ac214ba9530d88841088eb6adce5c537b5
- affected 82986fd631fa04bcedaefe11a6b3767601cbe84f – < 0fa116a17b69a28712cdf209318e345b676d7f6c
- affected 82986fd631fa04bcedaefe11a6b3767601cbe84f – < 261e0fe4e2c99f687114b64b10b98db964b475f4
- affected 99c444d3c3c43db354b253d9bfac081073dcb484
- affected 6.1.47 – < 6.1.191
- affected 5.15.128 – < 5.16
- affected 6.3
- unaffected < 6.3
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.57 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References6
- https://git.kernel.org/stable/c/1c22294c7d9b3b1c26a18ca4eca8c863a5a0d907 (opens in a new tab)
- https://git.kernel.org/stable/c/decea8279bec5a35413b2cb8e36951cca308fac0 (opens in a new tab)
- https://git.kernel.org/stable/c/ac490fea9fe74f9d9975c5d8250c8719750589cd (opens in a new tab)
- https://git.kernel.org/stable/c/562d24ac214ba9530d88841088eb6adce5c537b5 (opens in a new tab)
- https://git.kernel.org/stable/c/0fa116a17b69a28712cdf209318e345b676d7f6c (opens in a new tab)
- https://git.kernel.org/stable/c/261e0fe4e2c99f687114b64b10b98db964b475f4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-81882 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-90289)Record last updated .