{"id":"CVE-2026-64406","revision":"8c0dbfcfb73145048c8e0622833d190c","records":[{"revision":"8c0dbfcfb73145048c8e0622833d190c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64406","aliases":[],"title":"Bluetooth: fix UAF in bt_accept_dequeue()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: fix UAF in bt_accept_dequeue()\n\nbt_accept_get() takes a temporary reference before dropping the accept\nqueue lock. bt_accept_dequeue() currently drops that reference before\nbt_accept_unlink(), leaving only the queue reference.\n\nbt_accept_unlink() drops the queue reference. The subsequent\nsock_hold() therefore accesses freed memory if it was the final\nreference, as observed by KASAN during listening L2CAP socket cleanup.\n\nRetain the temporary queue-walk reference through unlink and hand it to\nthe caller on success. Drop it explicitly on the closed and\nnot-yet-connected paths.","state":0,"publishedAt":"2026-07-25T08:50:47.978+00:00","modifiedAt":"2026-10-19T20:38:27.281+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/af_bluetooth.c\",\n                        \"net/bluetooth/l2cap_sock.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"751de6ec671fe75ad9cf65a0638d2a06b6a5984d\",\n                            \"lessThan\": \"c0577c55219be42b6ea2ea8db11e85bfab6f4e8d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"407217734835d21d4e0105ebf347860dc1806f88\",\n                            \"lessThan\": \"96ad400d5132eb333f28f6f1e2d58f0728ca9547\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7eebd4c2c86f573af87ff165d08a83432eb0b919\",\n                            \"lessThan\": \"0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5d86d2f1b4d9a508c441d3e45277ae1a73cfed57\",\n                            \"lessThan\": \"c66a95e60b65d876a927123b0ed36bd6177d9ca6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"87c543e2f78d0871f271df92dab98901bbd5b6f5\",\n                            \"lessThan\": \"6303ed4bbe0095f4cc195225479bf506e010d1db\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"added1213395071470a900cc845a042fb51882a6\",\n                            \"lessThan\": \"26168db1ce5a9766cde021b18e590a101c056614\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ab1513597c6cf17cd1ad2a21e3b045421b48e022\",\n                            \"lessThan\": \"50c662bdcd51b03033a0abed6716bfd377ba1049\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ab1513597c6cf17cd1ad2a21e3b045421b48e022\",\n                            \"lessThan\": \"4bd0b274054f2679f28b70222b607bb0afc3ab9a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a5ca86a6097a8b030ca3226cd300b17ed330f966\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.10.259\",\n                            \"lessThan\": \"5.10.261\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.210\",\n                            \"lessThan\": \"5.15.212\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThan\": \"6.1.178\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.142\",\n                            \"lessThan\": \"6.6.145\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.92\",\n                            \"lessThan\": \"6.12.96\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.34\",\n                            \"lessThan\": \"6.18.39\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.11\",\n                            \"lessThan\": \"7.1\",\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/af_bluetooth.c\",\n                        \"net/bluetooth/l2cap_sock.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.261\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.212\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.96\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.39\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.4\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\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:L/UI:N/S:U/C:H/I:H/A:H","score":8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8d","https://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547","https://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0","https://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6","https://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1db","https://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614","https://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049","https://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64406","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64406","identifiers":["CVE-2026-64406"]},"retained":false,"historicalAffected":[]}],"coverage":[]}