{"id":"CVE-2026-90025","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-90025","summary":"usb: typec: ucsi: displayport: Fix OOB altmode array index","details":"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.","published":"2026-09-16T10:33:28.313Z","modified":"2026-09-18T03:48:35.175306451Z","cvss":{"score":7.7,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.270"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/04cec690b1fd9d1c4c314b91a10d8c68a3acfe18"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456"},{"type":"WEB","url":"https://git.kernel.org/stable/c/33a81acd2d1d0667d4eff93cb90339fa53e617e8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/58e0ee293ec5e06cacbe3953ad44042f1473dae9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83f1abd62cc134700ba92e1e2dc650a49a185497"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8fde7e4a366184e9a6aa95541e52933a73c00a74"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ac9f878c468052af6571e8639ab1c3ae040b908f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bdaaf3074aedce8f1b173cc363d61cff5f6a585f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90025.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90025"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-18T03:48:35.175306451Z"}}