{"id":"CVE-2026-74510","revision":null,"records":[{"revision":"c5eb6d412c5444199b22bf596cd4d7ba","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74510","aliases":[],"title":"Bluetooth: mgmt: fix UAF in pair command cancellation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: mgmt: fix UAF in pair command cancellation\n\nThe pairing completion and authentication failure callbacks look up the\npending MGMT_OP_PAIR_DEVICE command by walking hdev->mgmt_pending. The\nlookup returned a command that was still linked on the shared pending list,\nwithout keeping mgmt_pending_lock held for the later dereference and\nremoval.\n\nA concurrent MGMT_OP_CANCEL_PAIR_DEVICE request can remove and free the\nsame pending command before the callback uses it. The reverse race is also\npossible when cancel_pair_device() gets a command from pending_find() and a\ncallback removes it before the cancel path dereferences it. This can lead\nto a use-after-free and a second list_del().\n\nMake the pairing lookup helpers transfer ownership of the pending command\nby removing it from hdev->mgmt_pending while holding mgmt_pending_lock.\nThe callbacks and cancel path then complete the command and free it\ndirectly, so racing paths cannot find or free the same command again. Take\na temporary hci_conn reference in cancel_pair_device() because the command\ncompletion drops the reference stored in the pending command.","state":0,"publishedAt":"2026-08-15T12:27:32.503+00:00","modifiedAt":"2026-10-16T19:05:51.53+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 \"net/bluetooth/mgmt.c\"\n ],\n \"versions\": [\n {\n \"version\": \"e9a416b5ce0c0f93819f55d34cf6882196e9c3b2\",\n \"lessThan\": \"50af4280a587c9971b5388cbc438f1324e626b7b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e9a416b5ce0c0f93819f55d34cf6882196e9c3b2\",\n \"lessThan\": \"86ed4dd6548ccf277bc691bc912ca06e76b9d80c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e9a416b5ce0c0f93819f55d34cf6882196e9c3b2\",\n \"lessThan\": \"7c2a152a897cd1c184b2051484d4f74d803e7f4a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e9a416b5ce0c0f93819f55d34cf6882196e9c3b2\",\n \"lessThan\": \"c569def320aa8b1fde89227e2ea96606790fd86d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e9a416b5ce0c0f93819f55d34cf6882196e9c3b2\",\n \"lessThan\": \"51be7280980fddc90ebe874a69c2fe8ab02bb46a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e9a416b5ce0c0f93819f55d34cf6882196e9c3b2\",\n \"lessThan\": \"d0a7b48ad0921bd88effaee10bf970ab1d5d0ddd\",\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 \"net/bluetooth/mgmt.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2.6.39\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"2.6.39\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.184\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.151\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.103\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.44\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.8\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\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/50af4280a587c9971b5388cbc438f1324e626b7b","https://git.kernel.org/stable/c/86ed4dd6548ccf277bc691bc912ca06e76b9d80c","https://git.kernel.org/stable/c/7c2a152a897cd1c184b2051484d4f74d803e7f4a","https://git.kernel.org/stable/c/c569def320aa8b1fde89227e2ea96606790fd86d","https://git.kernel.org/stable/c/51be7280980fddc90ebe874a69c2fe8ab02bb46a","https://git.kernel.org/stable/c/d0a7b48ad0921bd88effaee10bf970ab1d5d0ddd"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74510","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74510","identifiers":["CVE-2026-74510"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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