Riskcovery

CVE-2026-53323

net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops

State
Published
Severity
Not scored
Published
Jun 26, 2026
Updated
Jun 26, 2026
Reserved
Jun 9, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2bcf4772e45adb00649a4e9cbff14b08a144f9e3 to before 74d64ae4254e99ef8c8215b057a76edac82c5f99Affected
  • 2bcf4772e45adb00649a4e9cbff14b08a144f9e3 to before abe91fd045874d21834482adcd7a9693e7377056Affected
  • 2bcf4772e45adb00649a4e9cbff14b08a144f9e3 to before 0f99e0c3e19badaf3fdced0d3feba623e59eed41Affected
LinuxLinux
  • 6.15Affected
  • before 6.15Not affected
  • 6.18.33 through 6.18.*Not affected
  • 7.0.10 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.