CVE-2010-2249
Memory leak in pngrutil.c in libpng before 1.2.44, and 1.4.x before 1.4.3, allows remote attackers to cause a denial of service (memory consumption and application crash) via a PNG image containing malformed Physical Scale (aka sCAL) chunks.
Date published : 2010-06-30
http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
http://lists.apple.com/archives/security-announce/2010//Nov/msg00003.html