{"id":"CVE-2026-80954","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-80954","summary":"i3c: Fix unlocked dereference of dev->desc 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->desc in i3c_device_get_supported_xfer_mode()\n\ni3c_device_get_supported_xfer_mode() uses dev->desc to obtain the\nmaster controller.  However, dev->desc must not be dereferenced unless\nbus->lock 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->bus instead, which is always valid for the\nlifetime of the device and does not require dereferencing dev->desc.","published":"2026-09-11T19:42:23.169Z","modified":"2026-09-14T03:45:53.794945790Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"7.2.4"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T03:45:53.794945790Z"}}