Summary
It was discovered that Dnsmasq was sending large DNS messages
over UDP, possibly causing transmission failures due to IP
fragmentation. This update lowers the default maximum size of
DNS messages to improve transmission reliability over UDP.
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | dnsmasq | 2.79-1ubuntu0.7 |
| Ubuntu · 20.04 LTS 20.04:LTS | dnsmasq | 2.80-1.1ubuntu1.7 |
| Ubuntu · 22.04 LTS 22.04:LTS | dnsmasq | 2.86-1.1ubuntu0.3 |
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | dnsmasq | 2.68-1ubuntu0.2+esm2 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | dnsmasq | 2.79-1ubuntu0.16.04.1+esm2 |
Vulnerabilities 1
-
High 7.5
An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should b…
References
-
report
https://ubuntu.com/security/CVE-2023-28450