USN-7689-1: Dnsmasq vulnerability
Publication date
11 August 2025
Overview
Dnsmasq could be made to crash if it received specially crafted network traffic.
Releases
Packages
- dnsmasq - Small caching DNS proxy and DHCP/TFTP server
Details
Xu Mingjie discovered that Dnsmasq did not correctly handle certain memory
operations. A remote attacker could possibly use this issue to cause a
denial of service.
Xu Mingjie discovered that Dnsmasq did not correctly handle certain memory
operations. A remote attacker could possibly use this issue to cause a
denial of service.
Update instructions
After a standard system update you need to restart dnsmasq to 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 | ||
|---|---|---|---|
| 14.04 trusty | dnsmasq – 2.68-1ubuntu0.2+esm3 | ||
| dnsmasq-base – 2.68-1ubuntu0.2+esm3 | |||
| dnsmasq-utils – 2.68-1ubuntu0.2+esm3 | |||
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