CVE-2026-64406

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix UAF in bt_accept_dequeue() bt_accept_get() takes a temporary reference before dropping the accept queue lock. bt_accept_dequeue() currently drops that reference before bt_accept_unlink(), leaving only the queue reference. bt_accept_unlink() drops the queue reference. The subsequent sock_hold() therefore accesses freed memory if it was the final reference, as observed by KASAN during listening L2CAP socket cleanup. Retain the temporary queue-walk reference through unlink and hand it to the caller on success. D...

Affected product and versions

Product

Linux

Affected versions

>= 751de6ec671fe75ad9cf65a0638d2a06b6a5984d < c0577c55219be42b6ea2ea8db11e85bfab6f4e8d, >= 407217734835d21d4e0105ebf347860dc1806f88 < 96ad400d5132eb333f28f6f1e2d58f0728ca9547, >= 7eebd4c2c86f573af87ff165d08a83432eb0b919 < 0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0, >= 5d86d2f1b4d9a508c441d3e45277ae1a73cfed57 < c66a95e60b65d876a927123b0ed36bd6177d9ca6, >= 87c543e2f78d0871f271df92dab98901bbd5b6f5 < 6303ed4bbe0095f4cc195225479bf506e010d1db, >= added1213395071470a900cc845a042fb51882a6 < 26168db1ce5a9766cde021b18e590a101c056614, >= ab1513597c6cf17cd1ad2a21e3b045421b48e022 < 50c662bdcd51b03033a0abed6716bfd377ba1049, >= ab1513597c6cf17cd1ad2a21e3b045421b48e022 < 4bd0b274054f2679f28b70222b607bb0afc3ab9a, >= a5ca86a6097a8b030ca3226cd300b17ed330f966, >= 5.10.259 < 5.10.261, >= 5.15.210 < 5.15.212, >= 6.1.175 < 6.1.178, >= 6.6.142 < 6.6.145, >= 6.12.92 < 6.12.96, >= 6.18.34 < 6.18.39, >= 7.0.11 < 7.1, >= 7.1

Fixed versions

No verified fixed-version field is available yet

Technical data

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

Not available