VULNERABILITY INTELLIGENCE

CVE-2026-31408

CVSS score8.8 HIGH
EPSS probability0.31%
CISA KEVNot currently listed
Published2026-04-06
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-416
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-416

Primary references