CVE-2026-52984
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.
Affected versions
Linux kernel versions
5.10.232,
5.15.175,
6.1.121,
6.6.67,
6.12.6,
5.4.288,
6.13
and later are affected. Fixed in
5.10.258,
5.15.209,
6.1.175,
6.6.141,
6.12.91,
6.18.33,
7.0.10,
7.1
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-52984?
CVE-2026-52984 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.10.232 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-52984 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-52984?
Yes — CVE-2026-52984 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 5.10.232 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-52984 actively exploited?
No — CVE-2026-52984 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.