Tracker / CVE-2026-31408
CVE-2026-31408
High 8.8
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 and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 2.6.12.1 → 5.15.203 |
| linux | linux_kernel · 5.16 → 6.1.168 |
| linux | linux_kernel · 6.13 → 6.18.21 |
| linux | linux_kernel · 6.19 → 6.19.11 |
| linux | linux_kernel · 6.2 → 6.6.131 |
| linux | linux_kernel · 6.7 → 6.12.80 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.