CVE-2025-21681

In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix lockup on tx to unregistering netdev with carrier Commit in a fixes tag attempted to fix the issue in the following sequence of calls: dooutput - ovsvportsend - devqueuexmit - devqueuexmit - netdevcorepicktx -...

CVE-2025-21681

Open vSwitch issue CVE-2025-21681 in the Linux kernel caused a lockup in skb_tx_hash when a netdev is unregistering with carrier reported as ON. The root cause was a loop in skb_tx_hash that could spin when dev->real_num_tx_queues goes to zero, especially for devices that report carrier state ...