CVE-2026-23105
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Linux Kernel < 5.10.249
- Linux Kernel < 5.15.199
- Linux Kernel < 6.1.162
- Linux Kernel < 6.6.122
- Linux Kernel < 6.12.68
- Linux Kernel < 6.18.8
- Linux Kernel 6.19
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-23105.md and follow it. Check whether this project is affected by CVE-2026-23105. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/77f1afd0bb4d5da95236f6114e6d0dfcde187ff6
- https://git.kernel.org/stable/c/93b8635974fb050c43d07e35e5edfe6e685ca28a
- https://git.kernel.org/stable/c/abd9fc26ea577561a5ef6241a1b058755ffdad0c
- https://git.kernel.org/stable/c/b8c24cf5268fb3bfb8d16324c3dbb985f698c835
- https://git.kernel.org/stable/c/d837fbee92453fbb829f950c8e7cf76207d73f33
- https://git.kernel.org/stable/c/f27047abf7cac1b6f90c3ad60de21ef9f717c26d
- https://git.kernel.org/stable/c/fac2c67bb2bb732eae4283e45fc338af7e08c254
References
- https://git.kernel.org/stable/c/77f1afd0bb4d5da95236f6114e6d0dfcde187ff6
- https://git.kernel.org/stable/c/93b8635974fb050c43d07e35e5edfe6e685ca28a
- https://git.kernel.org/stable/c/abd9fc26ea577561a5ef6241a1b058755ffdad0c
- https://git.kernel.org/stable/c/b8c24cf5268fb3bfb8d16324c3dbb985f698c835
- https://git.kernel.org/stable/c/d837fbee92453fbb829f950c8e7cf76207d73f33
- https://git.kernel.org/stable/c/f27047abf7cac1b6f90c3ad60de21ef9f717c26d
- https://git.kernel.org/stable/c/fac2c67bb2bb732eae4283e45fc338af7e08c254