CVE-2021-41688

Name	CVE-2021-41688
Description	DCMTK through 3.6.6 does not handle memory free properly. The object in the program is free but its address is still used in other locations. Sending specific requests to the dcmqrdb program will incur a double free. An attacker can use it to launch a DoS attack.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3847-1, DLA-4038-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
dcmtk (PTS)	bullseye	3.6.5-1	vulnerable
	bullseye (security)	3.6.5-1+deb11u4	fixed
	bookworm	3.6.7-9~deb12u3	fixed
	forky, sid, trixie	3.6.9-5	fixed

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

Package	Type	Release	Fixed Version	Origin
dcmtk	source	buster	3.6.4-2.1+deb10u1	DLA-3847-1
dcmtk	source	bullseye	3.6.5-1+deb11u1	DLA-4038-1
dcmtk	source	(unstable)	3.6.7-1

https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb (DCMTK-3.6.7)