CVE-2026-90025 is a vulnerability in Linux Kernel
Published on September 16, 2026
usb: typec: ucsi: displayport: Fix OOB altmode array index
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.
Products Associated with CVE-2026-90025
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Affected Versions
Linux:- Version af8622f6a585d8d82b11cd7987e082861fd0edd3 and below 8fde7e4a366184e9a6aa95541e52933a73c00a74 is affected.
- Version af8622f6a585d8d82b11cd7987e082861fd0edd3 and below 83f1abd62cc134700ba92e1e2dc650a49a185497 is affected.
- Version af8622f6a585d8d82b11cd7987e082861fd0edd3 and below 1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456 is affected.
- Version af8622f6a585d8d82b11cd7987e082861fd0edd3 and below 58e0ee293ec5e06cacbe3953ad44042f1473dae9 is affected.
- Version af8622f6a585d8d82b11cd7987e082861fd0edd3 and below ac9f878c468052af6571e8639ab1c3ae040b908f is affected.
- Version af8622f6a585d8d82b11cd7987e082861fd0edd3 and below 33a81acd2d1d0667d4eff93cb90339fa53e617e8 is affected.
- Version af8622f6a585d8d82b11cd7987e082861fd0edd3 and below bdaaf3074aedce8f1b173cc363d61cff5f6a585f is affected.
- Version af8622f6a585d8d82b11cd7987e082861fd0edd3 and below 04cec690b1fd9d1c4c314b91a10d8c68a3acfe18 is affected.
- Version 5.2 is affected.
- Before 5.2 is unaffected.
- Version 5.10.270, <= 5.10.* is unaffected.
- Version 5.15.221, <= 5.15.* is unaffected.
- Version 6.1.188, <= 6.1.* is unaffected.
- Version 6.6.157, <= 6.6.* is unaffected.
- Version 6.12.110, <= 6.12.* is unaffected.
- Version 6.18.51, <= 6.18.* is unaffected.
- Version 7.2.5, <= 7.2.* is unaffected.
- Version 7.3-rc2, <= * is unaffected.