{"id":"CVE-2023-54214","revision":null,"records":[{"revision":"1dbcdffe5abc4733bd4ac3044305a9aa","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-54214","aliases":[],"title":"Bluetooth: L2CAP: Fix potential user-after-free","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix potential user-after-free\n\nThis fixes all instances of which requires to allocate a buffer calling\nalloc_skb which may release the chan lock and reacquire later which\nmakes it possible that the chan is disconnected in the meantime.","state":0,"publishedAt":"2025-12-30T12:11:11.383+00:00","modifiedAt":"2026-10-15T21:41:41.834+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/l2cap_core.c\",\n \"net/bluetooth/l2cap_sock.c\"\n ],\n \"versions\": [\n {\n \"version\": \"a6a5568c03c4805d4d250f6bd9d468eeeb4ea059\",\n \"lessThan\": \"b2fde8cb2a25125111f2144604e0e7c0ebcc4bba\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a6a5568c03c4805d4d250f6bd9d468eeeb4ea059\",\n \"lessThan\": \"a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a6a5568c03c4805d4d250f6bd9d468eeeb4ea059\",\n \"lessThan\": \"60aaccf16d1e099c16bebfb96428ae762cb528f7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a6a5568c03c4805d4d250f6bd9d468eeeb4ea059\",\n \"lessThan\": \"b8ed41cc04fb74005aa51d17865ca3d022760335\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a6a5568c03c4805d4d250f6bd9d468eeeb4ea059\",\n \"lessThan\": \"31a288a4df7f6a28e65da22a4ab2add4a963738e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a6a5568c03c4805d4d250f6bd9d468eeeb4ea059\",\n \"lessThan\": \"64e28ecf44e46de9f01915a4146706a21c3469d2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a6a5568c03c4805d4d250f6bd9d468eeeb4ea059\",\n \"lessThan\": \"994e3e18908f5c4a12d07b44018e6aa85f071048\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a6a5568c03c4805d4d250f6bd9d468eeeb4ea059\",\n \"lessThan\": \"df5703348813235874d851934e957c3723d71644\",\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/l2cap_core.c\",\n \"net/bluetooth/l2cap_sock.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3.5\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.5\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.14.308\",\n \"lessThanOrEqual\": \"4.14.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.276\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.235\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.173\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.99\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.16\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.2.3\",\n \"lessThanOrEqual\": \"6.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV: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/b2fde8cb2a25125111f2144604e0e7c0ebcc4bba","https://git.kernel.org/stable/c/a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49","https://git.kernel.org/stable/c/60aaccf16d1e099c16bebfb96428ae762cb528f7","https://git.kernel.org/stable/c/b8ed41cc04fb74005aa51d17865ca3d022760335","https://git.kernel.org/stable/c/31a288a4df7f6a28e65da22a4ab2add4a963738e","https://git.kernel.org/stable/c/64e28ecf44e46de9f01915a4146706a21c3469d2","https://git.kernel.org/stable/c/994e3e18908f5c4a12d07b44018e6aa85f071048","https://git.kernel.org/stable/c/df5703348813235874d851934e957c3723d71644"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-54214","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-54214","identifiers":["CVE-2023-54214"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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