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[USN-7944-1] Net-SNMP vulnerability

Posted on 07 January 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7944-1
January 07, 2026

net-snmp vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Net-SNMP could be made to crash if it received specially crafted
input.

Software Description:
- net-snmp: SNMP (Simple Network Management Protocol) server and applications

Details:

Bahae Bahrini discovered that Net-SNMP could be made to write out of
bounds. If a user or an automated system were tricked into opening a
specially crafted input file, a remote attacker could possibly use
this issue to cause a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
libsnmp40t64 5.9.4+dfsg-2ubuntu2.1
snmp 5.9.4+dfsg-2ubuntu2.1
snmpd 5.9.4+dfsg-2ubuntu2.1

Ubuntu 25.04
libsnmp40t64 5.9.4+dfsg-1.1ubuntu7.1
snmp 5.9.4+dfsg-1.1ubuntu7.1
snmpd 5.9.4+dfsg-1.1ubuntu7.1

Ubuntu 24.04 LTS
libsnmp40t64 5.9.4+dfsg-1.1ubuntu3.2
snmp 5.9.4+dfsg-1.1ubuntu3.2
snmpd 5.9.4+dfsg-1.1ubuntu3.2

Ubuntu 22.04 LTS
libsnmp40 5.9.1+dfsg-1ubuntu2.9
snmp 5.9.1+dfsg-1ubuntu2.9
snmpd 5.9.1+dfsg-1ubuntu2.9

Ubuntu 20.04 LTS
libsnmp35 5.8+dfsg-2ubuntu2.9+esm2
Available with Ubuntu Pro
snmp 5.8+dfsg-2ubuntu2.9+esm2
Available with Ubuntu Pro
snmpd 5.8+dfsg-2ubuntu2.9+esm2
Available with Ubuntu Pro

Ubuntu 18.04 LTS
libsnmp30 5.7.3+dfsg-1.8ubuntu3.8+esm1
Available with Ubuntu Pro
snmp 5.7.3+dfsg-1.8ubuntu3.8+esm1
Available with Ubuntu Pro
snmpd 5.7.3+dfsg-1.8ubuntu3.8+esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libsnmp30 5.7.3+dfsg-1ubuntu4.6+esm2
Available with Ubuntu Pro
snmp 5.7.3+dfsg-1ubuntu4.6+esm2
Available with Ubuntu Pro
snmpd 5.7.3+dfsg-1ubuntu4.6+esm2
Available with Ubuntu Pro

Ubuntu 14.04 LTS
libsnmp30 5.7.2~dfsg-8.1ubuntu3.3+esm4
Available with Ubuntu Pro
snmp 5.7.2~dfsg-8.1ubuntu3.3+esm4
Available with Ubuntu Pro
snmpd 5.7.2~dfsg-8.1ubuntu3.3+esm4
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7944-1
CVE-2025-68615

Package Information:
https://launchpad.net/ubuntu/+source/net-snmp/5.9.4+dfsg-2ubuntu2.1
https://launchpad.net/ubuntu/+source/net-snmp/5.9.4+dfsg-1.1ubuntu7.1
https://launchpad.net/ubuntu/+source/net-snmp/5.9.4+dfsg-1.1ubuntu3.2
https://launchpad.net/ubuntu/+source/net-snmp/5.9.1+dfsg-1ubuntu2.9

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