CVE-2026-53323

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops<br /> <br /> DSA replaces the conduit (master) device&amp;#39;s ethtool_ops with its own<br /> wrappers that aggregate stats from both the conduit and DSA switch<br /> ports. Taking the lock again inside the DSA wrappers causes a deadlock.<br /> <br /> Stumbled upon this when booting qemu with fbnic and CONFIG_NET_DSA_LOOP=y<br /> (which looks like some kind of testing device that auto-populates the ports<br /> of eth0). `ethtool -i` is enough to deadlock. This means we have basically zero<br /> coverage for DSA stuff with real ops locked devs.<br /> <br /> Remove the redundant netdev_lock_ops()/netdev_unlock_ops() calls from<br /> the DSA conduit ethtool wrappers.