VDB
DEBIAN-CVE-2025-71182
DEBIAN-CVE-2025-71182
PUBLISHED
CVSS 5.5 MEDIUM
In the Linux kernel, the following vulnerability has been resolved: can: j1939: make j1939_session_activate() fail if device is no longer registered syzbot is still reporting unregister_netdevice: waiting for vcan0 to become free. Usage count = 2 even after commit 93a27b5891b8 ("can: j1939: add missing calls in NETDEV_UNREGISTER notification handler") was added. A debug printk() patch found that j1939_session_activate() can succeed even after j1939_cancel_active_session() from j1939_netdev_notify(NETDEV_UNREGISTER) has completed. Since j1939_cancel_active_session() is processed with the session list lock held, checking ndev->reg_state in j1939_session_activate() with the session list lock held can reliably close the race window.
Risk Scores
CVSS v3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | linux | 0, 6.12.57-1, 6.12.69-1~bpo12+1 |
| Debian:11 | linux-6.1 | 6.1.128-1, 6.1.119-1, 6.1.112-1 |
| Debian:12 | linux | *, 6.1.52-1, * |
| Debian:11 | linux | 5.10.218-1, 5.10.103-1, 5.10.103-1~bpo10+1 |
| Debian:14 | linux | 6.17.8-1~bpo13+1, 6.17.8-1, 6.17.7-2 |
Timeline
- Jan 31, 2026 CVE Published
- Apr 28, 2026 CVE Updated