CVE-2026-68138

CVE-2026-68138: Linux qdisc rate-table race to local root This repository contains a proof-of-concept local privilege-escalation exploit for CVE-2026-68138 , a race in the Linux traffic-control rate-table code. In the tested QEMU environment, the PoC escalates from an ordinary process with outer...

CVE-2026-68138

CVE-2026-68138 — Linux kernel net/sched qdisc rate-table UAF tracking site Source for the CVE-2026-68138 patch-status tracker: a single-page site recording which distributions have shipped a fix for the net/sched qdisc rate-table use-after-free / double-free in the Linux kernel. Where the facts...

CVE-2026-68138

In the Linux kernel, the following vulnerability has been resolved: net/sched: serialize qdiscrtablist against concurrent get/put qdiscgetrtab and qdiscputrtab mutate the process-global singly linked list qdiscrtablist and a plain non-atomic 'int refcnt' with no lock. This was only safe because...

CVE-2026-68138 net/sched: serialize qdisc_rtab_list against concurrent get/put

In the Linux kernel, the following vulnerability has been resolved: net/sched: serialize qdiscrtablist against concurrent get/put qdiscgetrtab and qdiscputrtab mutate the process-global singly linked list qdiscrtablist and a plain non-atomic 'int refcnt' with no lock. This was only safe because...

PT-2026-69538

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the network scheduler when handling rate-table lookups, inserts, and frees. The functions qdisc get rtab and qdisc put rtab modify the process-global singly...