CVE-2026-64406Bluetooth: fix UAF in bt_accept_dequeue()
Updated under an hour ago ()
Does this affect you?
It affects Linux and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 8.0 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 751de6ec671fe75ad9cf65a0638d2a06b6a5984d before c0577c55219be42b6ea2ea8db11e85bfab6f4e8d; 407217734835d21d4e0105ebf347860dc1806f88 builds before 96ad400d5132eb333f28f6f1e2d58f0728ca9547; 7eebd4c2c86f573af87ff165d08a83432eb0b919 builds before 0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0; from 5d86d2f1b4d9a508c441d3e45277ae1a73cfed57 before c66a95e60b65d876a927123b0ed36bd6177d9ca6; from 87c543e2f78d0871f271df92dab98901bbd5b6f5 before 6303ed4bbe0095f4cc195225479bf506e010d1db; from added1213395071470a900cc845a042fb51882a6 before 26168db1ce5a9766cde021b18e590a101c056614; from ab1513597c6cf17cd1ad2a21e3b045421b48e022 before 50c662bdcd51b03033a0abed6716bfd377ba1049; from ab1513597c6cf17cd1ad2a21e3b045421b48e022 before 4bd0b274054f2679f28b70222b607bb0afc3ab9a; and 8 more ranges | CNA record |
linux linux_kernel linux:linux_kernel | from 5.10.259 before 5.10.261; from 5.15.210 before 5.15.212; from 6.1.175 before 6.1.178; from 6.6.142 before 6.6.145; from 6.12.92 before 6.12.96; from 6.18.34 before 6.18.39; from 7.0.11 before 7.1; from 7.1.1 before 7.1.4; and 6 more ranges | NVD |
References
- https://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8dpatch
- https://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547patch
- https://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0patch
- https://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6patch
- https://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1dbpatch
- https://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614patch
- https://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049patch
- https://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9apatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.