CVE-2026-3039

Name	CVE-2026-3039
Description	BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments. This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-6285-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
bind9 (PTS)	bullseye	1:9.16.50-1~deb11u2	vulnerable
	bullseye (security)	1:9.16.50-1~deb11u5	vulnerable
	bookworm	1:9.18.47-1~deb12u1	vulnerable
	bookworm (security)	1:9.18.49-1~deb12u1	fixed
	trixie	1:9.20.21-1~deb13u1	vulnerable
	trixie (security)	1:9.20.23-1~deb13u1	fixed
	forky	1:9.20.22-1	vulnerable
	sid	1:9.20.23-1	fixed

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

Package	Type	Release	Fixed Version	Origin
bind9	source	bookworm	1:9.18.49-1~deb12u1	DSA-6285-1
bind9	source	trixie	1:9.20.23-1~deb13u1	DSA-6285-1
bind9	source	(unstable)	1:9.20.23-1

https://kb.isc.org/docs/cve-2026-3039