CVE-2026-52984 Details
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.
A vulnerability in the Linux kernel's netem (network emulation) module has been addressed. The issue arose because the queue limit check in the netem_enqueue function only considered packets in the internal tfifo, neglecting those added to the sch->q by the reorder path. This oversight allowed the total queue occupancy to surpass the defined limit under reordering conditions. The vulnerability affected the Linux kernel stable tree.
Users can update to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for updating the kernel can be found in the official Linux kernel documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72 | kernel.org | Patch |
| https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9 | kernel.org | Patch |
| https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d | kernel.org | Patch |
| https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b | kernel.org | Patch |
| https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.4.288, < 5.5 >= 5.10.232, < 5.10.258 >= 5.15.175, < 5.15.209 >= 6.1.121, < 6.1.175 >= 6.6.67, < 6.6.141 >= 6.12.6, < 6.12.91 >= 6.13.1, < 6.18.33 >= 6.19, < 7.0.10 6.13 - 6.13 rc3 6.13 rc4 6.13 rc5 6.13 rc6 6.13 rc7 7.1 rc1 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | Initial Analysis | [email protected] |
| Jun 24, 2026 | New CVE Received | kernel.org |