CVE-2026-23105
net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
3th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 4, 2026 |
| Last Updated | Apr 3, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new high vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
462dbc9101acd38e92eda93c0726857517a24bbd < fac2c67bb2bb732eae4283e45fc338af7e08c254 462dbc9101acd38e92eda93c0726857517a24bbd < b8c24cf5268fb3bfb8d16324c3dbb985f698c835 462dbc9101acd38e92eda93c0726857517a24bbd < f27047abf7cac1b6f90c3ad60de21ef9f717c26d 462dbc9101acd38e92eda93c0726857517a24bbd < 93b8635974fb050c43d07e35e5edfe6e685ca28a 462dbc9101acd38e92eda93c0726857517a24bbd < abd9fc26ea577561a5ef6241a1b058755ffdad0c 462dbc9101acd38e92eda93c0726857517a24bbd < 77f1afd0bb4d5da95236f6114e6d0dfcde187ff6 462dbc9101acd38e92eda93c0726857517a24bbd < d837fbee92453fbb829f950c8e7cf76207d73f33
Linux / Linux
3.8
References
git.kernel.org: https://git.kernel.org/stable/c/fac2c67bb2bb732eae4283e45fc338af7e08c254 git.kernel.org: https://git.kernel.org/stable/c/b8c24cf5268fb3bfb8d16324c3dbb985f698c835 git.kernel.org: https://git.kernel.org/stable/c/f27047abf7cac1b6f90c3ad60de21ef9f717c26d git.kernel.org: https://git.kernel.org/stable/c/93b8635974fb050c43d07e35e5edfe6e685ca28a git.kernel.org: https://git.kernel.org/stable/c/abd9fc26ea577561a5ef6241a1b058755ffdad0c git.kernel.org: https://git.kernel.org/stable/c/77f1afd0bb4d5da95236f6114e6d0dfcde187ff6 git.kernel.org: https://git.kernel.org/stable/c/d837fbee92453fbb829f950c8e7cf76207d73f33