CVE-2026-22999 — Linux vulnerability
12 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 98.80%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 25
Latest updateApr 17
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages12 packages
▶CVEListV5linux/linux462dbc9101acd38e92eda93c0726857517a24bbd — 2a64fb9b47afffeb5dbab5fd3a518e1436dcc90e+7
Patches
🔴Vulnerability Details
2OSV▶
CVE-2026-22999: 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_cha↗2026-01-25
GHSA▶
GHSA-3phq-r8q7-gf9j: 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_c↗2026-01-25