{"id":"CVE-2026-53071","revision":"8fddaba58ceb4262887a200ed1235105","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":[]}