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CVE-2025-21791

Description

In the Linux kernel, the following vulnerability has been resolved:vrf: use RCU protection in l3mdev_l3_out()l3mdev_l3_out() can be called without RCU being held:raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out()Add rcu_read_lock() / rcu_read_unlock() pair to avoida potential UAF.

POC

Reference

No PoCs from references.

Github

- https://github.com/runwhen-contrib/helm-charts

- https://github.com/w4zu/Debian_security