cve/2018/CVE-2018-19333.md

### [CVE-2018-19333](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19333)
![](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

pkg/sentry/kernel/shm/shm.go in Google gVisor before 2018-11-01 allows attackers to overwrite memory locations in processes running as root (but not escape the sandbox) via vectors involving IPC_RMID shmctl calls, because reference counting is mishandled.

### POC

#### Reference
- https://justi.cz/security/2018/11/14/gvisor-lpe.html
- https://justi.cz/security/2018/11/14/gvisor-lpe.html

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