PT-2026-52962 · Undefined · Undefined

Publicado 2026-06-26 · Atualizado 2026-06-26 · CVE-2026-53323

NVD

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.

Identificadores relacionados

CVE-2026-53323

Produtos afetados

Undefined

Referências · 4

• https://git.kernel.org/stable/c/abe91fd045874d21834482adcd7a9693e7377056 · Nota
• https://git.kernel.org/stable/c/74d64ae4254e99ef8c8215b057a76edac82c5f99 · Nota
• https://git.kernel.org/stable/c/0f99e0c3e19badaf3fdced0d3feba623e59eed41 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-53323 · Nota de Segurança