CVE-2005-4470

Name	CVE-2005-4470
Description	Heap-based buffer overflow in the get_bhead function in readfile.c in Blender BlenLoader 2.0 through 2.40pre allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a .blend file with a negative bhead.len value, which causes less memory to be allocated than expected, possibly due to an integer overflow.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-1039-1, DTSA-29-1
Debian Bugs	344398

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
blender (PTS)	bullseye (security), bullseye	2.83.5+dfsg-5+deb11u1	fixed
	bookworm	3.4.1+dfsg-2	fixed
	sid	4.2.3+dfsg-3	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
blender	source	sarge	2.36-1sarge1		DSA-1039-1
blender	source	etch	2.37a-1.1etch1		DTSA-29-1
blender	source	(unstable)	2.40-1	medium		344398

[woody] - blender <no-dsa> (Woody has it in non-free and it is binary-only)