Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bad869b5e41a08424ff130fd6bb41b854be70095 before ef8d739eee6f85303cbecebc01eb72f063de74e0; affected bad869b5e41a08424ff130fd6bb41b854be70095 before 5a0082ec20a05ef2378410323a5089a8f1786f4a |
| Linux / Linux | affected 7.0; unaffected 0 before 7.0; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.