{"id":"CVE-2026-90025","published":"2026-09-16T11:17:15.487","lastModified":"2026-09-16T15:18:25.790","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: displayport: Fix OOB altmode array index\n\nThe UCSI displayport driver indexes the connector's port altmode array\nwith the GET_CURRENT_CAM response after checking it is not 0xff. The\nport altmode array is UCSI_MAX_ALTMODES elements long. If the PPM\nreturns an invalid GET_CURRENT_CAM response above UCSI_MAX_ALTMODES and\nnot equal to 0xff, the kernel may crash with an array index OOB error.\n\nUpdate the UCSI displayport driver to verify the current cam is less\nthan UCSI_MAX_ALTMODES before accessing the port altmode array.","cvssScore":7.7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/04cec690b1fd9d1c4c314b91a10d8c68a3acfe18","tags":[]},{"url":"https://git.kernel.org/stable/c/1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456","tags":[]},{"url":"https://git.kernel.org/stable/c/33a81acd2d1d0667d4eff93cb90339fa53e617e8","tags":[]},{"url":"https://git.kernel.org/stable/c/58e0ee293ec5e06cacbe3953ad44042f1473dae9","tags":[]},{"url":"https://git.kernel.org/stable/c/83f1abd62cc134700ba92e1e2dc650a49a185497","tags":[]},{"url":"https://git.kernel.org/stable/c/8fde7e4a366184e9a6aa95541e52933a73c00a74","tags":[]},{"url":"https://git.kernel.org/stable/c/ac9f878c468052af6571e8639ab1c3ae040b908f","tags":[]},{"url":"https://git.kernel.org/stable/c/bdaaf3074aedce8f1b173cc363d61cff5f6a585f","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"This vulnerability allows an out-of-bound array access in the UCSI displayport driver, which could lead to a kernel crash if exploited.","exploitability":"Exploitation requires an attacker to send a crafted GET_CURRENT_CAM response with an invalid value, which is relatively difficult to achieve without knowledge of the system's UCSI configuration.","blast_radius":"If exploited, the kernel crash could potentially lead to a denial of service condition, impacting the system's stability and availability.","remediation":"Upgrade to the fixed version 5.15.110 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["kernel","crash","ooob"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-09T08:45:53.388Z"}}