CVE-2026-64406High· 8.0▾ TwilightIn 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 r…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
0.3% → 0.4%
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.
linux_kernel >= 5.10.259, < 5.10.261linux_kernel >= 5.15.210, < 5.15.212linux_kernel >= 6.1.175, < 6.1.178linux_kernel >= 6.6.142, < 6.6.145linux_kernel >= 6.12.92, < 6.12.96linux_kernel >= 6.18.34, < 6.18.39linux_kernel >= 7.0.11, < 7.1linux_kernel >= 7.1.1, < 7.1.4linux_kernel = 7.1linux_kernel = 7.2Upgrade past the affected range:
linux_kernel 7.1.4Connected by shared product, vendor, weakness, or advisory.
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