Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops DSA replaces the conduit (master) device's ethtool_ops with its own wrappers that aggregate stats from both the conduit and DSA switch ports. Taking the lock again inside the DSA wrappers causes a deadlock. Stumbled upon this when booting qemu with fbnic and CONFIG_NET_DSA_LOOP=y (which looks like some kind of testing device that auto-populates the ports of eth0). `ethtool -i` is enough to deadlock. This means we have basically zero coverage for DSA stuff with real ops locked devs. Remove the redundant netdev_lock_ops()/netdev_unlock_ops() calls from the DSA conduit ethtool wrappers.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.15, < 6.18.33 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0f99e0c3e19badaf3fdced0d3feba623e59eed41Patch
- https://git.kernel.org/stable/c/74d64ae4254e99ef8c8215b057a76edac82c5f99Patch
- https://git.kernel.org/stable/c/abe91fd045874d21834482adcd7a9693e7377056Patch
FAQ
What is CVE-2026-53323?
CVE-2026-53323 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops DSA replaces the conduit (master) device's ethtool_ops with ...
How severe is CVE-2026-53323?
CVE-2026-53323 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53323?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.