CVE-2026-22999
Last modified
CVE-2026-22999 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_qfq: do not free existing class in qfq_change_class() Fixes qfq_change_class() error case. cl->qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_qfq: do not free existing class in qfq_change_class() Fixes qfq_change_class() error case. cl->qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 3.8, < 5.10.249 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.199 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.162 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.122 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.67 | — |
| Linux | Linux Kernel | >= 6.13, < 6.18.7 | — |
| Linux | Linux Kernel | 6.19 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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