ZDI-26-834: Linux Kernel IPv6 AH Routing Header Integer Underflow Local Privilege Escalation Vulnerability
// AI summary
Linux Kernel has a local privilege escalation vulnerability, CVE-2026-80844, related to an IPv6 AH Routing Header Integer Underflow, allowing low-privileged code execution to escalate privileges.
// from the source
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. The following CVEs are assigned: CVE-2026-80844.