{"id":"CVE-2026-80954","revision":"390ebac75c464767a81ff6d721f782e8","records":[{"revision":"390ebac75c464767a81ff6d721f782e8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80954","aliases":[],"title":"i3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode()","description":"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.","state":0,"publishedAt":"2026-09-11T19:42:23.169+00:00","modifiedAt":"2026-10-19T08:45:38.169+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/i3c/device.c\",\n                        \"drivers/i3c/internals.h\",\n                        \"drivers/i3c/master.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"256a21743d911f94ce92fe28f793cd586f3860b2\",\n                            \"lessThan\": \"251db58324ea4792c3f9f692ab09be148e051969\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"256a21743d911f94ce92fe28f793cd586f3860b2\",\n                            \"lessThan\": \"8bed7f4fa710914b7f05fd59998316bfb4d43385\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/i3c/device.c\",\n                        \"drivers/i3c/internals.h\",\n                        \"drivers/i3c/master.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/251db58324ea4792c3f9f692ab09be148e051969","https://git.kernel.org/stable/c/8bed7f4fa710914b7f05fd59998316bfb4d43385"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80954","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80954","identifiers":["CVE-2026-80954"]},"retained":false,"historicalAffected":[]}],"coverage":[]}