{"id":"CVE-2025-40318","revision":null,"records":[{"revision":"a38f6e6a0c4e4c51a162b6ec999ce968","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-40318","aliases":[],"title":"Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once\n\nhci_cmd_sync_dequeue_once() does lookup and then cancel\nthe entry under two separate lock sections. Meanwhile,\nhci_cmd_sync_work() can also delete the same entry,\nleading to double list_del() and \"UAF\".\n\nFix this by holding cmd_sync_work_lock across both\nlookup and cancel, so that the entry cannot be removed\nconcurrently.","state":0,"publishedAt":"2025-12-08T00:46:45.382+00:00","modifiedAt":"2026-10-15T22:02:43.644+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_sync.c\"\n ],\n \"versions\": [\n {\n \"version\": \"f00f36db76eb8fd10d13e80e2590f23b5beaa54d\",\n \"lessThan\": \"0a94f7e017438935c09ef833a1aa908ad9875213\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1499f79995c7ee58e3bfeeff75f6d1b37dcda881\",\n \"lessThan\": \"932c0a4f77ac13e526fdd5b42914d29c9821d389\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"505ea2b295929e7be2b4e1bc86ee31cb7862fb01\",\n \"lessThan\": \"ae76cf6c2c842944c6514c57df54d728f1916553\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"505ea2b295929e7be2b4e1bc86ee31cb7862fb01\",\n \"lessThan\": \"9cd536970192b72257afcdfba0bfc09993e6f19c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"505ea2b295929e7be2b4e1bc86ee31cb7862fb01\",\n \"lessThan\": \"09b0cd1297b4dbfe736aeaa0ceeab2265f47f772\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"357603f4d396d85fbf0045512efaf1d7f7394ed7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6.1.120\",\n \"lessThan\": \"6.1.159\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.51\",\n \"lessThan\": \"6.6.117\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.8.9\",\n \"lessThan\": \"6.9\",\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_sync.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.9\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.9\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.159\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.117\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.58\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.17.8\",\n \"lessThanOrEqual\": \"6.17.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/0a94f7e017438935c09ef833a1aa908ad9875213","https://git.kernel.org/stable/c/932c0a4f77ac13e526fdd5b42914d29c9821d389","https://git.kernel.org/stable/c/ae76cf6c2c842944c6514c57df54d728f1916553","https://git.kernel.org/stable/c/9cd536970192b72257afcdfba0bfc09993e6f19c","https://git.kernel.org/stable/c/09b0cd1297b4dbfe736aeaa0ceeab2265f47f772"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-40318","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-40318","identifiers":["CVE-2025-40318"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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