In the Linux kernel, the following vulnerability has been resolved:codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()After making all ->qlen_notify() callbacks idempotent, now it is safe toremove the check of qlen!=0 from both fq_codel_dequeue() andcodel_qdisc_dequeue().
No PoCs from references.
- https://github.com/w4zu/Debian_security