CVE-2026-31396

A flaw was found in the Linux kernel's Media Access Controller MACB Ethernet driver and Precision Time Protocol PTP clock subsystem. A local attacker could exploit a use-after-free vulnerability by accessing the PTP clock via the gettsinfo ethtool call after the PTP clock has been deallocated. Th...

CVE-2026-31396 net: macb: fix use-after-free access to PTP clock

In the Linux kernel, the following vulnerability has been resolved: net: macb: fix use-after-free access to PTP clock PTP clock is registered on every opening of the interface and destroyed on every closing. However it may be accessed via gettsinfo ethtool call which is possible while the interfa...