CVEs-PoC/2010/CVE-2010-4255.md

### [CVE-2010-4255](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4255)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20n%2Fa%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access.

### POC

#### Reference
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html

#### Github
No PoCs found on GitHub currently.