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CVE-2026-52984

net/sched: netem: fix queue limit check to include reordered packets

Published: 6/24/2026 Last updated: 6/24/2026 Reserved: 6/9/2026

In the Linux kernel, the following vulnerability has been resolved: net/sched: netem: fix queue limit check to include reordered packets The queue limit check in netem_enqueue() uses q->t_len which only counts packets in the internal tfifo. Packets placed in sch->q by the reorder path (__qdisc_enqueue_head) are not counted, allowing the total queue occupancy to exceed sch->limit under reordering. Include sch->q.qlen in the limit check.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (2)

Product Vendor Version
Linux Linux V200R007C00SPC900,V200R007C00SPC900PWE,V200R007C00SPCb00,V200R007C00SPCb00PWE,V200R007C00SPCc00
Linux Linux V200R007C00,V200R007C00SPC900,V200R007C00SPC900PWE,V200R007C00SPCa00,V200R007C00SPCb00,V200R007C00SPCb00PWE,V200R007C00SPCc00

References (8)