https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T22:47:13.922511+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2023-28450 CVE-2023-28450 2026-09-29T22:47:13.959838+00:00

An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.

 https://vulnerability.circl.lu/vuln/usn-6034-1 USN-6034-1 — dnsmasq vulnerability 2026-09-29T22:47:13.960015+00:00

Affected: Ubuntu:Pro:14.04:LTS: dnsmasq, Ubuntu:Pro:16.04:LTS: dnsmasq, Ubuntu:18.04:LTS: dnsmasq, Ubuntu:20.04:LTS: dnsmasq, Ubuntu:22.04:LTS: dnsmasq

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.