CVE-2026-22999
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
25/01/2026
Last modified:
06/02/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
net/sched: sch_qfq: do not free existing class in qfq_change_class()<br />
<br />
Fixes qfq_change_class() error case.<br />
<br />
cl->qdisc and cl should only be freed if a new class and qdisc<br />
were allocated, or we risk various UAF.
Impact
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/0a234660dc70ce45d771cbc76b20d925b73ec160
- https://git.kernel.org/stable/c/2a64fb9b47afffeb5dbab5fd3a518e1436dcc90e
- https://git.kernel.org/stable/c/362e269bb03f7076ba9990e518aeddb898232e50
- https://git.kernel.org/stable/c/3879cffd9d07aa0377c4b8835c4f64b4fb24ac78
- https://git.kernel.org/stable/c/cff6cd703f41d8071995956142729e4bba160363
- https://git.kernel.org/stable/c/e9d8f11652fa08c647bf7bba7dd8163241a332cd
- https://git.kernel.org/stable/c/f06f7635499bc806cbe2bbc8805c7cef8b1edddf