net-snmp before 5.8.1.pre1 has a double free in usmfreeusmStateReference 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.
{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "5.8+dfsg-2ubuntu2.1",
            "binary_name": "libsnmp-base"
        },
        {
            "binary_version": "5.8+dfsg-2ubuntu2.1",
            "binary_name": "libsnmp-dev"
        },
        {
            "binary_version": "5.8+dfsg-2ubuntu2.1",
            "binary_name": "libsnmp-perl"
        },
        {
            "binary_version": "5.8+dfsg-2ubuntu2.1",
            "binary_name": "libsnmp35"
        },
        {
            "binary_version": "5.8+dfsg-2ubuntu2.1",
            "binary_name": "snmp"
        },
        {
            "binary_version": "5.8+dfsg-2ubuntu2.1",
            "binary_name": "snmpd"
        },
        {
            "binary_version": "5.8+dfsg-2ubuntu2.1",
            "binary_name": "snmptrapd"
        },
        {
            "binary_version": "5.8+dfsg-2ubuntu2.1",
            "binary_name": "tkmib"
        }
    ]
}