cve/2019/CVE-2019-20892.md

### [CVE-2019-20892](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20892)
![](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

net-snmp before 5.8.1.pre1 has a double free in usm_free_usmStateReference in snmplib/snmpusm.c via an SNMPv3 GetBulk request. NOTE: this affects net-snmp packages shipped to end users by multiple Linux distributions, but might not affect an upstream release.

### POC

#### Reference
- https://www.oracle.com/security-alerts/cpujan2021.html

#### Github
- https://github.com/Live-Hack-CVE/CVE-2019-20892