cve/2019/CVE-2019-7221.md

### [CVE-2019-7221](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7221)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free.

### POC

#### Reference
- http://packetstormsecurity.com/files/151713/KVM-VMX-Preemption-Timer-Use-After-Free.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ecec76885bcfe3294685dc363fd1273df0d5d65f
- https://github.com/torvalds/linux/commits/master/arch/x86/kvm
- https://usn.ubuntu.com/3932-1/

#### Github
- https://github.com/ARPSyndicate/cvemon