CVE-2026-72035

Status: UPDATED  |  Advisory ID: CVE-2026-72035

Key Details

Affected Products, Subsystems & Sectors

What to Know

In the Linux kernel, the following vulnerability has been resolved:

net/sched: sch_taprio: Replace direct dequeue call with peek and qdisc_dequeue_peeked

When taprio's software path peeks a non-work-conserving child qdisc, the

child stashes the peeked skb in its gso_skb; taprio_dequeue_from_txq()

then takes the packet with a direct child ->dequeue() call, which ignores

that stash, orphans the peeked skb and desyncs the child's qlen/backlog.

With a qfq child this re-enters the child on an emptied list and

dereferences NULL, panicking the kernel from softirq on ordinary egress.

Take the packet through qdisc_dequeue_peeked(), as sch_red and sch_sfb

now do. The helper returns the child's stashed skb first and is a no-op

when there is none, so a work-conserving child is unaffected and the

gated path now consumes the skb whose length was charged to the budget. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References