The _bdf_parse_glyphs function in FreeType before 2.4.11 allows context-dependent attackers to cause a denial of service (out-of-bounds write and crash) via vectors related to BDF fonts and an ENCODING field with a negative value.
git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=7f2e4f4f553f6836be7683f66226afac3fa979b8
lists.opensuse.org/opensuse-updates/2013-01/msg00056.html
lists.opensuse.org/opensuse-updates/2013-01/msg00078.html
secunia.com/advisories/51826
secunia.com/advisories/51900
www.freetype.org/
www.openwall.com/lists/oss-security/2012/12/25/2
www.securitytracker.com/id?1027921
www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.520186
www.ubuntu.com/usn/USN-1686-1
savannah.nongnu.org/bugs/?37907