FreeType before 2.4.11 allows context-dependent attackers to cause a denial of service (NULL pointer dereference and crash) via vectors related to BDF fonts and the improper handling of an "allocation error" in the bdf_free_font function.

References

• https://nvd.nist.gov/vuln/detail/CVE-2012-5668
• https://savannah.nongnu.org/bugs/?37905
• http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=9b6b5754b57c12b820e01305eb69b8863a161e5a
• http://lists.opensuse.org/opensuse-updates/2013-01/msg00056.html
• http://lists.opensuse.org/opensuse-updates/2013-01/msg00068.html
• http://lists.opensuse.org/opensuse-updates/2013-01/msg00078.html
• http://secunia.com/advisories/51826
• http://secunia.com/advisories/51900
• http://www.freetype.org/
• http://www.openwall.com/lists/oss-security/2012/12/25/2
• http://www.securitytracker.com/id?1027921
• http://www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.520186
• http://www.ubuntu.com/usn/USN-1686-1