CVE-2026-52984

critical

Description

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.

References

https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e

https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b

https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3

https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177

https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6

https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d

https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9

https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72

Details

Source: Mitre, NVD

Published: 2026-06-24

Updated: 2026-06-24

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00184