CVE-2026-22999

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Source
https://cve.org/CVERecord?id=CVE-2026-22999
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-22999.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-22999
Downstream
Related
Published
2026-01-25T14:36:13.909Z
Modified
2026-05-07T04:16:58.754892Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
net/sched: sch_qfq: do not free existing class in qfq_change_class()
Details

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

net/sched: schqfq: do not free existing class in qfqchange_class()

Fixes qfqchangeclass() error case.

cl->qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22999.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
462dbc9101acd38e92eda93c0726857517a24bbd
Fixed
2a64fb9b47afffeb5dbab5fd3a518e1436dcc90e
Fixed
cff6cd703f41d8071995956142729e4bba160363
Fixed
f06f7635499bc806cbe2bbc8805c7cef8b1edddf
Fixed
0a234660dc70ce45d771cbc76b20d925b73ec160
Fixed
362e269bb03f7076ba9990e518aeddb898232e50
Fixed
e9d8f11652fa08c647bf7bba7dd8163241a332cd
Fixed
3879cffd9d07aa0377c4b8835c4f64b4fb24ac78

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-22999.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.8.0
Fixed
5.10.249
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.199
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.162
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.122
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.67
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.7

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-22999.json"