CVE-2026-31408
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_fr…
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 2.6.12.1 before 5.15.203 from 5.16 before 6.1.168 from 6.2 before 6.6.131 from 6.7 before 6.12.80 from 6.13 before 6.18.21 from 6.19 before 6.19.11 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/108b81514d8f2535eb16651495cefb2250528db3
- https://git.kernel.org/stable/c/37e18bc8c9a70d77bd099e2273f328b3bc7f6d0d
- https://git.kernel.org/stable/c/45aaca995e4a7a05b272a58e7ab2fff4f611b8f1
- https://git.kernel.org/stable/c/598dbba9919c5e36c54fe1709b557d64120cb94b
- https://git.kernel.org/stable/c/7197462e90b8ce15caa1ae15d4bc2bb8cd21b11e
- https://git.kernel.org/stable/c/b0a7da0e3f7442545f071499beb36374714bb9de
- https://git.kernel.org/stable/c/d57384e27d1ebf0047e3f00a6e1181b8be9857a2
- https://git.kernel.org/stable/c/e76e8f0581ef555eacc11dbb095e602fb30a5361