{"id":"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.","modified":"2026-09-18T03:48:35.175306451Z","published":"2026-09-16T10:33:28.313Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90025.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"af8622f6a585d8d82b11cd7987e082861fd0edd3"},{"fixed":"8fde7e4a366184e9a6aa95541e52933a73c00a74"},{"fixed":"83f1abd62cc134700ba92e1e2dc650a49a185497"},{"fixed":"1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456"},{"fixed":"58e0ee293ec5e06cacbe3953ad44042f1473dae9"},{"fixed":"ac9f878c468052af6571e8639ab1c3ae040b908f"},{"fixed":"33a81acd2d1d0667d4eff93cb90339fa53e617e8"},{"fixed":"bdaaf3074aedce8f1b173cc363d61cff5f6a585f"},{"fixed":"04cec690b1fd9d1c4c314b91a10d8c68a3acfe18"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90025.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.2.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90025.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}