Off-by-one error in the icon_cb function in pe_icons.c in libclamav in ClamAV before 0.96.5 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors. NOTE: some of these details are obtained from third party information.
https://wwws.clamav.net/bugzilla/show_bug.cgi?id=2344
https://bugzilla.redhat.com/show_bug.cgi?id=659861
http://xorl.wordpress.com/2010/12/05/cve-2010-4261-clamav-icon_cb-off-by-one/
http://www.vupen.com/english/advisories/2010/3185
http://www.vupen.com/english/advisories/2010/3137
http://www.vupen.com/english/advisories/2010/3135
http://www.ubuntu.com/usn/USN-1031-1
http://www.securitytracker.com/id?1024818
http://www.securityfocus.com/bid/45152
http://www.mandriva.com/security/advisories?name=MDVSA-2010:249
http://support.apple.com/kb/HT4581
http://secunia.com/advisories/42720
http://secunia.com/advisories/42555
http://secunia.com/advisories/42523
http://secunia.com/advisories/42426
http://openwall.com/lists/oss-security/2010/12/03/6
http://openwall.com/lists/oss-security/2010/12/03/3
http://openwall.com/lists/oss-security/2010/12/03/1
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052401.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051905.html
http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html
http://git.clamav.net/gitweb?p=clamav-devel.git%3Ba=blob_plain%3Bf=ChangeLog%3Bhb=master