Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold sco_recv_frame() reads conn->sk under sco_conn_lock() but immediately releases the lock without holding a reference to the socket. A concurrent close() can free the socket between the lock release and the subsequent sk->sk_state access, resulting in a use-after-free. Other functions in the same file (sco_sock_timeout(), sco_conn_del()) correctly use sco_sock_hold() to safely hold a reference under the lock. Fix by using sco_sock_hold() to take a reference before releasing the lock, and adding sock_put() on all exit paths.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/108b81514d8f2535eb16651495cefb2250528db3 Patch
- git.kernel.org/stable/c/45aaca995e4a7a05b272a58e7ab2fff4f611b8f1 Patch
- git.kernel.org/stable/c/598dbba9919c5e36c54fe1709b557d64120cb94b Patch
- git.kernel.org/stable/c/7197462e90b8ce15caa1ae15d4bc2bb8cd21b11e Patch
- git.kernel.org/stable/c/b0a7da0e3f7442545f071499beb36374714bb9de Patch
- git.kernel.org/stable/c/d57384e27d1ebf0047e3f00a6e1181b8be9857a2 Patch
- git.kernel.org/stable/c/e76e8f0581ef555eacc11dbb095e602fb30a5361 Patch
- git.kernel.org/stable/c/37e18bc8c9a70d77bd099e2273f328b3bc7f6d0d
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 26 · as of 12 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.