CVEvulnerability
CVE-2026-90025
7.7 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-09-16
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.7 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Description
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.
References
- https://git.kernel.org/stable/c/04cec690b1fd9d1c4c314b91a10d8c68a3acfe18 git.kernel.org
- https://git.kernel.org/stable/c/1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456 git.kernel.org
- https://git.kernel.org/stable/c/33a81acd2d1d0667d4eff93cb90339fa53e617e8 git.kernel.org
- https://git.kernel.org/stable/c/58e0ee293ec5e06cacbe3953ad44042f1473dae9 git.kernel.org
- https://git.kernel.org/stable/c/83f1abd62cc134700ba92e1e2dc650a49a185497 git.kernel.org
- https://git.kernel.org/stable/c/8fde7e4a366184e9a6aa95541e52933a73c00a74 git.kernel.org
- https://git.kernel.org/stable/c/ac9f878c468052af6571e8639ab1c3ae040b908f git.kernel.org
- https://git.kernel.org/stable/c/bdaaf3074aedce8f1b173cc363d61cff5f6a585f git.kernel.org