CVE-2026-53231
mediumpriority · track · 22EPSS 0.001 · 1 %ileEURUUSEPSS · scored 2026-10-27
In the Linux kernel, the following vulnerability has been resolved: net: phy: don't try to setup PHY-driven SFP cages when using genphy We don't have support for PHY-driver SFP cages with the genphy code. On top of that, it was found by sashiko that running sfp_bus_add_upstream() for genphy deadlocks, as for genphy the PHY probing runs under RTNL, which isn't the case for non-genphy drivers. This problem was reproduced, and does lead to a deadlock on RTNL. Before the blamed commit, the phy_sfp_probe() call was made by individual PHY drivers, so there was no way to get to the SFP probing path when using genphy. Let's therefore only run phy_sfp_probe when not using genphy.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
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affected products (13)
Products and version ranges known to be affected.
also known as (4)
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sources
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references (7)
External citations — patches, advisories, analysis.
- https://git.kernel.org/stable/c/5a0082ec20a05ef2378410323a5089a8f1786f4acnnvd
- https://git.kernel.org/stable/c/ef8d739eee6f85303cbecebc01eb72f063de74e0cnnvd
- https://www.kernel.org/Patchcnnvd
- https://git.kernel.org/stable/c/5a0082ec20a05ef2378410323a5089a8f1786f4aenisa_euvd
- https://git.kernel.org/stable/c/ef8d739eee6f85303cbecebc01eb72f063de74e0enisa_euvd
- https://git.kernel.org/stable/c/5a0082ec20a05ef2378410323a5089a8f1786f4aPatchnvd
- https://git.kernel.org/stable/c/ef8d739eee6f85303cbecebc01eb72f063de74e0Patchnvd
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