CVE-2025-38551 – “Virtio-Net Deadlock Vulnerability”

CVE ID : CVE-2025-38551

Published : Aug. 16, 2025, 12:15 p.m. | 1 hour, 46 minutes ago

Description : In the Linux kernel, the following vulnerability has been resolved:

virtio-net: fix recursived rtnl_lock() during probe()

The deadlock appears in a stack trace like:

virtnet_probe()
rtnl_lock()
virtio_config_changed_work()
netdev_notify_peers()
rtnl_lock()

It happens if the VMM sends a VIRTIO_NET_S_ANNOUNCE request while the
virtio-net driver is still probing.

The config_work in probe() will get scheduled until virtnet_open() enables
the config change notification via virtio_config_driver_enable().

Severity: 0.0 | NA

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