{"id":"CVE-2026-80764","revision":"0a6cff39cbcd47c39b8fbdc345f33f43","records":[{"revision":"0a6cff39cbcd47c39b8fbdc345f33f43","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80764","aliases":[],"title":"Bluetooth: hci_event: fix LE list UAF on reset","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix LE list UAF on reset\n\nhci_cc_reset() clears the LE accept and resolving lists without taking\nhdev->lock. Other command-complete handlers serialize updates to these\nlists with that lock, and the debugfs readers hold it while walking them.\n\nThis permits the reset completion and a debugfs read to interleave as\nfollows:\n\n hci_rx_work debugfs reader\n ----------- --------------\n lock hdev->lock\n fetch current entry\n list_del(entry)\n kfree(entry)\n read entry fields\n\nThe reader then dereferences a freed list entry and may follow its stale\nnext pointer.\n\nKASAN reported:\n\n BUG: KASAN: slab-use-after-free in white_list_show+0x15f/0x180\n Read of size 1 at addr ffff8881015dab16 by task poc/95\n\n Call Trace:\n white_list_show+0x15f/0x180\n seq_read_iter+0x3ff/0x1190\n seq_read+0x267/0x3d0\n vfs_read+0x177/0xa20\n ksys_read+0xf7/0x1c0\n\n Allocated by task 91:\n hci_bdaddr_list_add+0x1a6/0x3a0\n hci_cc_le_add_to_accept_list+0xab/0x140\n hci_cmd_complete_evt+0x26c/0x9a0\n hci_event_packet+0x454/0xb20\n hci_rx_work+0x293/0x730\n\n Freed by task 90:\n kfree+0x131/0x3c0\n hci_bdaddr_list_clear+0xd8/0x160\n hci_cc_reset+0x28a/0x370\n hci_cmd_complete_evt+0x26c/0x9a0\n hci_event_packet+0x454/0xb20\n hci_rx_work+0x293/0x730\n\nTake hdev->lock around both list clears. This matches the existing\nmutation and traversal locking convention.","state":0,"publishedAt":"2026-09-04T15:12:36.599+00:00","modifiedAt":"2026-10-19T08:43:20.79+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/hci_event.c\"\n ],\n \"versions\": [\n {\n \"version\": \"a4d5504d5c39cc84f1f828e19967595597a8136e\",\n \"lessThan\": \"8e68c380290b1dd64a0a512ce66d0264130c46ed\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5504d5c39cc84f1f828e19967595597a8136e\",\n \"lessThan\": \"0628cc9b2fa29985a7b8c774741f8a736b0f5e7c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5504d5c39cc84f1f828e19967595597a8136e\",\n \"lessThan\": \"d57702d4c55633c243da5a2fec37ae2ad4adb621\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5504d5c39cc84f1f828e19967595597a8136e\",\n \"lessThan\": \"39a3afb91be3cb465f46ce7a8e5696d9e33edf93\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5504d5c39cc84f1f828e19967595597a8136e\",\n \"lessThan\": \"b55e83a4ba31d40deae22d4e4dc8c84083e953c6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5504d5c39cc84f1f828e19967595597a8136e\",\n \"lessThan\": \"25b05e3ce31d954540e99954bcc66cbceb27ab35\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5504d5c39cc84f1f828e19967595597a8136e\",\n \"lessThan\": \"33af47e847fe4a28b109673affb5874015d54f5a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0de8cd646b0152c9ddd10257d8284938d0df0181\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"3.18.3\",\n \"lessThan\": \"3.19\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\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/hci_event.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3.19\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.19\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.185\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.154\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.106\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.47\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.11\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.1\",\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":[],"references":["https://git.kernel.org/stable/c/8e68c380290b1dd64a0a512ce66d0264130c46ed","https://git.kernel.org/stable/c/0628cc9b2fa29985a7b8c774741f8a736b0f5e7c","https://git.kernel.org/stable/c/d57702d4c55633c243da5a2fec37ae2ad4adb621","https://git.kernel.org/stable/c/39a3afb91be3cb465f46ce7a8e5696d9e33edf93","https://git.kernel.org/stable/c/b55e83a4ba31d40deae22d4e4dc8c84083e953c6","https://git.kernel.org/stable/c/25b05e3ce31d954540e99954bcc66cbceb27ab35","https://git.kernel.org/stable/c/33af47e847fe4a28b109673affb5874015d54f5a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80764","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80764","identifiers":["CVE-2026-80764"]},"retained":false,"historicalAffected":[]}],"coverage":[]}