High 8.0Published Jul 25, 2026

CVE-2026-64406Bluetooth: fix UAF in bt_accept_dequeue()

Updated under an hour ago (Oct 27, 2026, 2:23 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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): CWE-416
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: Modified
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

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

References

https://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8d	patch
https://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547	patch
https://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0	patch
https://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6	patch
https://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1db	patch
https://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614	patch
https://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049	patch
https://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9a	patch

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.