CVE-2026-90025usb: typec: ucsi: displayport: Fix OOB altmode array index
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: displayport: Fix OOB altmode array index The UCSI displayport driver indexes the connector's port altmode array with the GET_CURRENT_CAM response after checking it is not 0xff. The port altmode array is UCSI_MAX_ALTMODES elements long. If the PPM returns an invalid GET_CURRENT_CAM response above UCSI_MAX_ALTMODES and not equal to 0xff, the kernel may crash with an array index OOB error. Update the UCSI displayport driver to verify the current cam is less than UCSI_MAX_ALTMODES before accessing the port altmode array.
- CVSS
- 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from af8622f6a585d8d82b11cd7987e082861fd0edd3 before 8fde7e4a366184e9a6aa95541e52933a73c00a74; from af8622f6a585d8d82b11cd7987e082861fd0edd3 before 83f1abd62cc134700ba92e1e2dc650a49a185497; from af8622f6a585d8d82b11cd7987e082861fd0edd3 before 1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456; from af8622f6a585d8d82b11cd7987e082861fd0edd3 before 58e0ee293ec5e06cacbe3953ad44042f1473dae9; from af8622f6a585d8d82b11cd7987e082861fd0edd3 before ac9f878c468052af6571e8639ab1c3ae040b908f; from af8622f6a585d8d82b11cd7987e082861fd0edd3 before 33a81acd2d1d0667d4eff93cb90339fa53e617e8; from af8622f6a585d8d82b11cd7987e082861fd0edd3 before bdaaf3074aedce8f1b173cc363d61cff5f6a585f; from af8622f6a585d8d82b11cd7987e082861fd0edd3 before 04cec690b1fd9d1c4c314b91a10d8c68a3acfe18 | CNA record |
References
- https://git.kernel.org/stable/c/8fde7e4a366184e9a6aa95541e52933a73c00a74
- https://git.kernel.org/stable/c/83f1abd62cc134700ba92e1e2dc650a49a185497
- https://git.kernel.org/stable/c/1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456
- https://git.kernel.org/stable/c/58e0ee293ec5e06cacbe3953ad44042f1473dae9
- https://git.kernel.org/stable/c/ac9f878c468052af6571e8639ab1c3ae040b908f
- https://git.kernel.org/stable/c/33a81acd2d1d0667d4eff93cb90339fa53e617e8
- https://git.kernel.org/stable/c/bdaaf3074aedce8f1b173cc363d61cff5f6a585f
- https://git.kernel.org/stable/c/04cec690b1fd9d1c4c314b91a10d8c68a3acfe18
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.