Vulnerability in Linux

CVE-2026-23105

In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.

EPSS: 0.001 (2.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

References

Frequently asked questions

What is CVE-2026-23105?
CVE-2026-23105 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-02-04.
How severe is CVE-2026-23105?
High severity. CVSS v3 base score is 7.8 out of 10.