CVE-2026-63983

The CVE-2026-63983 entry concerns the Linux kernel net/sched component with netem, where duplicating a packet could cause recursive duplication loops in the qdisc tree, potentially exhausting stack or memory. Root cause: the old duplication guard invalidly zeroed q->duplicate around re-enqueue...

PT-2026-61300

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix packet loop on netem when duplicate is on When netem duplicates a packet it re-enqueues the copy at the root qdisc. If another netem sits in the tree the copy can be duplicated again, recursing until the stack or...

USN-7477-1 c-ares vulnerability

It was discovered that c-ares incorrectly handled re-enqueuing certain queries. A remote attacker could possibly use this issue to cause c-ares to crash, resulting in a denial of service...