New Linux pedit COW Exploit Enables Root Access by Poisoning Cached Binaries

A flaw in the Linux kernel's traffic-control subsystem allows unprivileged users to gain root access via an out-of-bounds write vulnerability (CVE-2026-46331), nicknamed 'pedit COW'. A public exploit emerged quickly after the CVE was assigned on June 16, and Red Hat has rated the flaw as a security risk.