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.
Metrics
CVSS 3.1 8.8/10
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 37e18bc8c9a70d77bd099e2273f328b3bc7f6d0d; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d57384e27d1ebf0047e3f00a6e1181b8be9857a2; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b0a7da0e3f7442545f071499beb36374714bb9de; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 45aaca995e4a7a05b272a58e7ab2fff4f611b8f1; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 108b81514d8f2535eb16651495cefb2250528db3; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7197462e90b8ce15caa1ae15d4bc2bb8cd21b11e; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e76e8f0581ef555eacc11dbb095e602fb30a5361; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 598dbba9919c5e36c54fe1709b557d64120cb94b |
| Linux | Linux | 2.6.12 |
References
- https://git.kernel.org/stable/c/108b81514d8f2535eb16651495cefb2250528db3Patch
- https://git.kernel.org/stable/c/37e18bc8c9a70d77bd099e2273f328b3bc7f6d0d
- https://git.kernel.org/stable/c/45aaca995e4a7a05b272a58e7ab2fff4f611b8f1Patch
- https://git.kernel.org/stable/c/598dbba9919c5e36c54fe1709b557d64120cb94bPatch
- https://git.kernel.org/stable/c/7197462e90b8ce15caa1ae15d4bc2bb8cd21b11ePatch
- https://git.kernel.org/stable/c/b0a7da0e3f7442545f071499beb36374714bb9dePatch
- https://git.kernel.org/stable/c/d57384e27d1ebf0047e3f00a6e1181b8be9857a2Patch
- https://git.kernel.org/stable/c/e76e8f0581ef555eacc11dbb095e602fb30a5361Patch
Timeline
- Published
- Apr 6, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Modified