ZDI-26-683: Linux Kernel IPv6 VTI Subsystem Use-After-Free Local Privilege Escalation Vulnerability
ZDI discloses CVE-2026-72463, a CVSS 7.5 use-after-free in the Linux Kernel IPv6 VTI subsystem enabling privilege escalation.
ZDI-26-683 covers a use-after-free in the Linux Kernel IPv6 VTI subsystem that allows local attackers to escalate privileges. Exploitation requires first obtaining the ability to execute high-privileged code on the target system, limiting practical impact. ZDI assigned a CVSS rating of 7.5 and CVE-2026-72463.
- Use-after-free in Linux Kernel IPv6 VTI subsystem
- Local privilege escalation requiring pre-existing high-privileged code execution
- CVSS 7.5, tracked as CVE-2026-72463
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-72463 | Linux kernel: xfrm | 9.8 | <1% |
From the original article
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.
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