CVE-2026-64228

In the Linux kernel, the following vulnerability has been resolved: net: ethtool: phy: avoid NULL deref when PHY driver is unbound phydev-drv can become NULL while the phydevice is still attached to its netdevice, namely after the PHY driver is unbound via sysfs: echo...

CVE-2026-64228 net: ethtool: phy: avoid NULL deref when PHY driver is unbound

In the Linux kernel, the following vulnerability has been resolved: net: ethtool: phy: avoid NULL deref when PHY driver is unbound phydev-drv can become NULL while the phydevice is still attached to its netdevice, namely after the PHY driver is unbound via sysfs: echo...

CVE-2026-64228

The CVE-2026-64228 issue affects the Linux kernel’s ethtool PHY driver: when a PHY driver is unbound via sysfs while the phy_device remains attached, phydev->drv can become NULL, causing ETHTOOL_MSG_PHY_GET to dereference a NULL drv. The root cause is that phy_remove() clears phydev->drv bu...