CVE-2021-45951: dnsmasq: a heap-based buffer overflow in check_bad_address

Severity: Critical

CVSS Score: 9.8

Dnsmasq 2.86 has a heap-based buffer overflow in check_bad_address (called from check_for_bogus_wildcard and FuzzCheckForBogusWildcard). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.