CVE-2026-64406 | 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 KASA
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. Drop it explicitly on the closed and
not-yet-connected paths.
- 🔗 git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bf…
- 🔗 git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f07…
- 🔗 git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa…
- 🔗 git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6…
- 🔗 git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506…
- 🔗 git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a10…
- 🔗 git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd3…
- 🔗 git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0…
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CVE-2026-64406 | 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 KASA
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 refe