---
id: CVE-2026-52984
title: |-
  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 t…
summary: |-
  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 t…
severity: none
published: '2026-06-24'
updated: '2026-07-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-52984'
references:
  - url: 'https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00162
epssPercentile: 0.04807
ingestedAt: '2026-07-11T13:13:25.489Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.