DescriptionHeap-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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-1039-1, DTSA-29-1
NVD severityhigh (attack range: remote)
Debian Bugs344398

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
blender (PTS)jessie2.72.b+dfsg0-3fixed
jessie (security)2.72.b+dfsg0-3+deb8u1fixed
stretch (security), stretch2.79.b+dfsg0-1~deb9u1fixed
bullseye, sid2.80+dfsg-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


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

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