{"id":"CVE-2026-53071","revision":null,"records":[{"revision":"8fddaba58ceb4262887a200ed1235105","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53071","aliases":[],"title":"Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del().","state":0,"publishedAt":"2026-06-24T16:30:12.694+00:00","modifiedAt":"2026-10-19T19:47:15.158+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\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n \"lessThan\": \"96dca51715d86559ed6ed8028e5445cecb80f3ae\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n \"lessThan\": \"330b20ec97916961ee0e6c29c06bc0fa7c96e64c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n \"lessThan\": \"0ccd75c51f620374086f359e906917676e699a1c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n \"lessThan\": \"77a853aec710b2fdf41fa298ea3cbc9a4358f917\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n \"lessThan\": \"fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n \"lessThan\": \"dc89961b76f12aff47124c1df4bdb32a080f4d0c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n \"lessThan\": \"5501d055a1ce3c747141e3955ba8cf034d193f3e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n \"lessThan\": \"42776497cdbc9a665b384a6dcb85f0d4bd927eab\",\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\": \"5.7\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.7\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.258\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.209\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.175\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.141\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.91\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.33\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.10\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\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/96dca51715d86559ed6ed8028e5445cecb80f3ae","https://git.kernel.org/stable/c/330b20ec97916961ee0e6c29c06bc0fa7c96e64c","https://git.kernel.org/stable/c/0ccd75c51f620374086f359e906917676e699a1c","https://git.kernel.org/stable/c/77a853aec710b2fdf41fa298ea3cbc9a4358f917","https://git.kernel.org/stable/c/fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14","https://git.kernel.org/stable/c/dc89961b76f12aff47124c1df4bdb32a080f4d0c","https://git.kernel.org/stable/c/5501d055a1ce3c747141e3955ba8cf034d193f3e","https://git.kernel.org/stable/c/42776497cdbc9a665b384a6dcb85f0d4bd927eab"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53071","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53071","identifiers":["CVE-2026-53071"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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