DescriptionDnsmasq before 2.76 allows remote servers to cause a denial of service (crash) via a reply with an empty DNS address that has an (1) A or (2) AAAA record defined locally.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
dnsmasq (PTS)stretch2.76-5+deb9u2fixed
stretch (security)2.76-5+deb9u3fixed
buster, buster (security)2.80-1+deb10u1fixed
bookworm, bullseye2.85-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
dnsmasqsourcewheezy(not affected)
dnsmasqsourcejessie(not affected)


[jessie] - dnsmasq <not-affected> (Vulnerable code introduced later)
[wheezy] - dnsmasq <not-affected> (Vulnerable code introduced later)
Fixed by:;a=commit;h=41a8d9e99be9f2cc8b02051dd322cb45e0faac87 (v2.76rc1)
Introduced by:;a=commit;h=cbc652423403e3cef00e00240f6beef713142246 (v2.73rc1)

Search for package or bug name: Reporting problems