CVE-2015-6242

Name	CVE-2015-6242
Description	The wmem_block_split_free_chunk function in epan/wmem/wmem_allocator_block.c in the wmem block allocator in the memory manager in Wireshark 1.12.x before 1.12.7 does not properly consider a certain case of multiple realloc operations that restore a memory chunk to its original size, which allows remote attackers to cause a denial of service (incorrect free operation and application crash) via a crafted packet.
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-3367-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
wireshark (PTS)	bullseye	3.4.10-0+deb11u1	fixed
	bullseye (security)	3.4.16-0+deb11u1	fixed
	bookworm	4.0.17-0+deb12u1	fixed
	bookworm (security)	4.0.11-1~deb12u1	fixed
	trixie	4.4.7-1	fixed
	forky, sid	4.6.0-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin
wireshark	source	squeeze	(unfixed)	end-of-life
wireshark	source	wheezy	(not affected)
wireshark	source	jessie	1.12.1+g01b65bf-4+deb8u3		DSA-3367-1
wireshark	source	(unstable)	1.12.7+g7fc8978-1

Notes

[wheezy] - wireshark <not-affected> (Vulnerable code not present)
[squeeze] - wireshark <end-of-life> (Not supported in Squeeze LTS)
https://www.wireshark.org/security/wnpa-sec-2015-22.html