cve/2020/CVE-2020-36311.md

### [CVE-2020-36311](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36311)
![](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

An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.

### POC

#### Reference
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03

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