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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
216509dda290f6db92c816dd54b83c1df9da9e76 affected < 0f875d52db4c921da610e481b72f03cc82fdcb72
c2047b0e216c8edce227d7c42f99ac2877dad0e4 affected < ef9a41b3870fb90577da5b2de5bd140022d4021e
10df49cfca73dfbbdb6c4150d859f7e8926ae427 affected < 74fcd8e127200a50ee22ba2b45c164722bdb9177
3824c5fad18eeb7abe0c4fc966f29959552dca3e affected < 39a66e83ea41fe845631eeb8d326953de27d13f9
356078a5c55ec8d2061fcc009fb8599f5b0527f9 affected < 54b5dbacd00dedffd5e2eed76de1c3839996b5e6
f8d4bc455047cf3903cd6f85f49978987dbb3027 affected < 8450462eaf91d5d2a9e863507b16d18e814baef3
f8d4bc455047cf3903cd6f85f49978987dbb3027 affected < 936a7dd87251f6f3e88983350833edf60fe6a80b
f8d4bc455047cf3903cd6f85f49978987dbb3027 affected < 4185701fcce6b426b6c3630b25330dddd9c47b0d
83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31 affected —
5.10.232 affected < 5.10.258
5.15.175 affected < 5.15.209
6.1.121 affected < 6.1.175
6.6.67 affected < 6.6.141
6.12.6 affected < 6.12.91
5.4.288 affected < 5.5
Linux Linux affected
Version Status Constraints
6.13 affected —
0 unaffected < 6.13
5.10.258 unaffected ≤ 5.10.*
5.15.209 unaffected ≤ 5.15.*
6.1.175 unaffected ≤ 6.1.*
6.6.141 unaffected ≤ 6.6.*
6.12.91 unaffected ≤ 6.12.*
6.18.33 unaffected ≤ 6.18.*
7.0.10 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

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Solution

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Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72 cve-icon
https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9 cve-icon
https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d cve-icon
https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6 cve-icon
https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177 cve-icon
https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3 cve-icon
https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b cve-icon
https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e cve-icon
History

Wed, 24 Jun 2026 19:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
CWE-400

Wed, 24 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title net/sched: netem: fix queue limit check to include reordered packets
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-24T16:28:59.088Z

Reserved: 2026-06-09T07:44:35.376Z

Link: CVE-2026-52984

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-24T18:45:05Z

Weaknesses