{"id":"CVE-2026-80954","summary":"i3c: Fix unlocked dereference of dev-\u003edesc in i3c_device_get_supported_xfer_mode()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: Fix unlocked dereference of dev-\u003edesc in i3c_device_get_supported_xfer_mode()\n\ni3c_device_get_supported_xfer_mode() uses dev-\u003edesc to obtain the\nmaster controller.  However, dev-\u003edesc must not be dereferenced unless\nbus-\u003elock is held, and this function does not take that lock.\n\nThe function only needs access to the master controller associated with\nthe device's bus.  Use dev-\u003ebus instead, which is always valid for the\nlifetime of the device and does not require dereferencing dev-\u003edesc.","modified":"2026-09-14T03:45:53.794945790Z","published":"2026-09-11T19:42:23.169Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80954.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/251db58324ea4792c3f9f692ab09be148e051969"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8bed7f4fa710914b7f05fd59998316bfb4d43385"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80954.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80954"},{"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":"256a21743d911f94ce92fe28f793cd586f3860b2"},{"fixed":"251db58324ea4792c3f9f692ab09be148e051969"},{"fixed":"8bed7f4fa710914b7f05fd59998316bfb4d43385"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80954.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80954.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}