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Tracker / CVE-2025-71182

CVE-2025-71182

Media 5.5

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.

Prodotti e versioni affette

linux linux_kernel
linux linux_kernel · 5.11 → 5.15.198
linux linux_kernel · 5.16 → 6.1.161
linux linux_kernel · 5.4.1 → 5.10.248
linux linux_kernel · 6.13 → 6.18.6
linux linux_kernel · 6.2 → 6.6.121
linux linux_kernel · 6.7 → 6.12.66

Analisi

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Riferimenti