DescriptionA single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs1014715

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
dnsmasq (PTS)buster, buster (security)2.80-1+deb10u1vulnerable
bookworm, sid2.88-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bullseye] - dnsmasq <no-dsa> (Minor issue)
[buster] - dnsmasq <no-dsa> (Minor issue)
[stretch] - dnsmasq <no-dsa> (Minor issue);a=commit;h=03345ecefeb0d82e3c3a4c28f27c3554f0611b39

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