ZDI-CAN-30930: ZDI-26-683: Linux Kernel IPv6 VTI Subsystem Use-After-Free Local Privilege Escalation Vulnerability
Published Sep 14, 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 high-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.5. The following CVEs are assigned: CVE-2026-72463.
Affected Software
1 affected component
Linux Kernel
Event History
Sep 14, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What level of access does an attacker need before exploiting this issue?
The attacker must first be able to execute high-privileged code on the target system. This is therefore relevant as a privilege-escalation opportunity after that level of code execution has already been obtained.
2
What is the assigned CVE and severity score?
The issue is assigned CVE-2026-72463. ZDI assigned it a CVSS score of 7.5.