USN-7944-1: Net-SNMP vulnerability

Publication date

7 January 2026

Overview

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


Packages

  • 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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
25.10 questing libsnmp40t64 –  5.9.4+dfsg-2ubuntu2.1
snmp –  5.9.4+dfsg-2ubuntu2.1
snmpd –  5.9.4+dfsg-2ubuntu2.1
25.04 plucky libsnmp40t64 –  5.9.4+dfsg-1.1ubuntu7.1
snmp –  5.9.4+dfsg-1.1ubuntu7.1
snmpd –  5.9.4+dfsg-1.1ubuntu7.1
24.04 LTS noble libsnmp40t64 –  5.9.4+dfsg-1.1ubuntu3.2
snmp –  5.9.4+dfsg-1.1ubuntu3.2
snmpd –  5.9.4+dfsg-1.1ubuntu3.2
22.04 LTS jammy libsnmp40 –  5.9.1+dfsg-1ubuntu2.9
snmp –  5.9.1+dfsg-1ubuntu2.9
snmpd –  5.9.1+dfsg-1ubuntu2.9
20.04 LTS focal libsnmp35 –  5.8+dfsg-2ubuntu2.9+esm2  
snmp –  5.8+dfsg-2ubuntu2.9+esm2  
snmpd –  5.8+dfsg-2ubuntu2.9+esm2  
18.04 LTS bionic libsnmp30 –  5.7.3+dfsg-1.8ubuntu3.8+esm1  
snmp –  5.7.3+dfsg-1.8ubuntu3.8+esm1  
snmpd –  5.7.3+dfsg-1.8ubuntu3.8+esm1  
16.04 LTS xenial libsnmp30 –  5.7.3+dfsg-1ubuntu4.6+esm2  
snmp –  5.7.3+dfsg-1ubuntu4.6+esm2  
snmpd –  5.7.3+dfsg-1ubuntu4.6+esm2  
14.04 LTS trusty libsnmp30 –  5.7.2~dfsg-8.1ubuntu3.3+esm4  
snmp –  5.7.2~dfsg-8.1ubuntu3.3+esm4  
snmpd –  5.7.2~dfsg-8.1ubuntu3.3+esm4  

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