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THREAT OPS › Threat News › [NVD] CVE-2026-80630 (CRITICAL 9.8) — In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen Whenever fq_codel drops packets during peek, it calls qdisc_tree_reduce_backlog. An issue arises because it calls

[NVD] CVE-2026-80630 (CRITICAL 9.8) — In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen Whenever fq_codel drops packets during peek, it calls qdisc_tree_reduce_backlog. An issue arises because it calls

highnvdPublished 2026-08-28

CVE-2026-80630 CVSS: 9.8 CRITICAL Published: 2026-08-28T08:16:47.850

In the Linux kernel, the following vulnerability has been resolved:

net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen

Whenever fq_codel drops packets during peek, it calls qdisc_tree_reduce_backlog. An issue arises because it calls qdisc_tree_reduce_backlog before it reincrements

Indicators of compromise

CVE-2026-80630cve
http://lore.kernel.org/netdev/CAN2cbVe79oj0O9==m4+4x3v+O+qzRagA=2=wkrp9i9=CqYvyZA@mail.gmail.com/url
cqyvyza@mail.gmail.comemail

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-80630