{"id":"CVE-2023-53827","revision":null,"records":[{"revision":"05096368300046d390ed53091a0322cf","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-53827","aliases":[],"title":"Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}\n\nSimilar to commit d0be8347c623 (\"Bluetooth: L2CAP: Fix use-after-free\ncaused by l2cap_chan_put\"), just use l2cap_chan_hold_unless_zero to\nprevent referencing a channel that is about to be destroyed.","state":0,"publishedAt":"2025-12-09T01:29:40.794+00:00","modifiedAt":"2026-10-15T21:41:37.002+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 ],\n \"versions\": [\n {\n \"version\": \"61d6ef3e3408cdf7e622646fb90a9f7f9560b943\",\n \"lessThan\": \"f2d38e77aa5f3effc143e7dd24da8acf02925958\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"61d6ef3e3408cdf7e622646fb90a9f7f9560b943\",\n \"lessThan\": \"1351551aa9058e07a20a27a158270cf84fcde621\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"61d6ef3e3408cdf7e622646fb90a9f7f9560b943\",\n \"lessThan\": \"c02421992505c95c7f3c9ad59ee35e22eac60988\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"61d6ef3e3408cdf7e622646fb90a9f7f9560b943\",\n \"lessThan\": \"d9ba36c22a7bb09d6bac4cc2f243eff05da53f43\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"61d6ef3e3408cdf7e622646fb90a9f7f9560b943\",\n \"lessThan\": \"ac6725a634f7e8c0330610a8527f20c730b61115\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"61d6ef3e3408cdf7e622646fb90a9f7f9560b943\",\n \"lessThan\": \"348d446762e7c70778df8bafbdf3fa0df2123f58\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"61d6ef3e3408cdf7e622646fb90a9f7f9560b943\",\n \"lessThan\": \"d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"61d6ef3e3408cdf7e622646fb90a9f7f9560b943\",\n \"lessThan\": \"a2a9339e1c9deb7e1e079e12e27a0265aea8421a\",\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 ],\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\": \"4.14.313\",\n \"lessThanOrEqual\": \"4.14.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.281\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.241\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.178\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.108\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.25\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.2.12\",\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/f2d38e77aa5f3effc143e7dd24da8acf02925958","https://git.kernel.org/stable/c/1351551aa9058e07a20a27a158270cf84fcde621","https://git.kernel.org/stable/c/c02421992505c95c7f3c9ad59ee35e22eac60988","https://git.kernel.org/stable/c/d9ba36c22a7bb09d6bac4cc2f243eff05da53f43","https://git.kernel.org/stable/c/ac6725a634f7e8c0330610a8527f20c730b61115","https://git.kernel.org/stable/c/348d446762e7c70778df8bafbdf3fa0df2123f58","https://git.kernel.org/stable/c/d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284","https://git.kernel.org/stable/c/a2a9339e1c9deb7e1e079e12e27a0265aea8421a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53827","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-53827","identifiers":["CVE-2023-53827"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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