CVE-2025-38553 net/sched: Restrict conditions for adding duplicating netems to qdisc tree

In the Linux kernel, the following vulnerability has been resolved: net/sched: Restrict conditions for adding duplicating netems to qdisc tree netemenqueue's duplication prevention logic breaks when a netem resides in a qdisc tree with other netems - this can lead to a soft lockup and OOM loop in...

CVE-2025-38553

The CVE-2025-38553 entry describes a Linux kernel net/sched netem duplication issue in qdisc trees. The duplication prevention logic in netem_enqueue can fail when a netem sits with other netems in the same tree, potentially causing a soft lockup and an OOM loop in netem_dequeue. The resolution p...