Published: 19 October 2010
Unspecified vulnerability in the 2D component in Oracle Java SE and Java for Business 6 Update 21, 5.0 Update 25, 1.4.2_27, and 1.3.1_28 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors. NOTE: the previous information was obtained from the October 2010 CPU. Oracle has not commented on claims from a reliable downstream vendor that this is a double free vulnerability in IndexColorModel that allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code.
From the Ubuntu security team
It was discovered that there exists a double free in java's indexColorModel that could allow an attacker to cause an applet or application to crash, or possibly execute arbitrary code with the privilege of the user running the java applet or application.
red hat update description: Double free in IndexColorModel could cause an untrusted applet or application to crash or, possibly, execute arbitrary code with the privileges of the user running the applet or application.