Descriptionnet-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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs963713

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
net-snmp (PTS)stretch5.7.3+dfsg-1.7+deb9u1fixed
stretch (security)5.7.3+dfsg-1.7+deb9u3fixed
buster, buster (security)5.7.3+dfsg-5+deb10u1fixed
bullseye, sid5.9+dfsg-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
net-snmpsourcestretch(not affected)
net-snmpsourcebuster(not affected)


[buster] - net-snmp <not-affected> (Vulnerable code introduced later)
[stretch] - net-snmp <not-affected> (Vulnerable code introduced later)
Extra patches to address memory leaks:
Introduced in (5.8-dev)

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