PT-2026-52962 · Undefined · Undefined
Published
2026-06-26
·
Updated
2026-06-26
·
CVE-2026-53323
None
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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.
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Related Identifiers
Affected Products
Undefined