ZDI-26-700: Linux Kernel QFQ Plus Scheduler Use-After-Free Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-22999.
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this issue?
Affected Linux Kernel installations are exposed when an attacker can execute low-privileged code locally on the target system. This is a local privilege-escalation issue, so remote access alone is not described as sufficient.
What access does an attacker need to exploit it?
The attacker must first be able to execute code with low privileges on the affected system. The provided information does not indicate that elevated privileges are required before exploitation.