ZDI-CAN-31770: ZDI-26-623: Linux Kernel IPv6 Multicast Routing Use-After-Free Local Privilege Escalation Vulnerability
Published Sep 9, 2026
·Updated
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 8.8.
Affected Software
1 affected component
Linux Linux kernel
Event History
Sep 9, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
Who can exploit this vulnerability?
An attacker must already be able to execute low-privileged code on an affected Linux system. This is therefore a local privilege-escalation issue rather than a remote initial-access vulnerability.
2
What is the potential impact after successful exploitation?
Successful exploitation allows a local attacker to escalate privileges on the affected system.