EIP-2026-103038

PRE-CVE

Xen 64bit PV Guest - pagetable use-after-type-change Breakout

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103038. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit leverages a race condition in Xen's handling of pagetable updates via multicall hypercalls, allowing a 64-bit PV guest kernel to corrupt top-level pagetables. The PoC demonstrates arbitrary hypervisor memory manipulation, leading to a triple fault or shellcode execution in the hypervisor context.

Description

Xen 64bit PV Guest - pagetable use-after-type-change Breakout

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textlocallinux
https://www.exploit-db.com/exploits/41973

This exploit leverages a race condition in Xen's handling of pagetable updates via multicall hypercalls, allowing a 64-bit PV guest kernel to corrupt top-level pagetables. The PoC demonstrates arbitrary hypervisor memory manipulation, leading to a triple fault or shellcode execution in the hypervisor context.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: Xen 4.6.x (specifically tested on 4.6.0 and 4.6.4)
Auth required
Prerequisites: Root access in a 64-bit PV guest · Xen hypervisor with vulnerable version
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026