It was discovered that the filterReturnValue() method of the MethodHandles in the Libraries component of OpenJDK did not properly check filter MethodHandle parameter count. An untrusted Java application or applet could use this flaw to bypass Java sandbox restrictions.
Public now via Oracle CPU July 2016, fixed in Oracle JDK 8u101. External References: http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html#AppendixJAVA
OpenJDK 8 upstream commit: http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/3eab3ce82c31
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 6 Via RHSA-2016:1458 https://access.redhat.com/errata/RHSA-2016:1458
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 6 Oracle Java for Red Hat Enterprise Linux 7 Via RHSA-2016:1475 https://access.redhat.com/errata/RHSA-2016:1475
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 6 Via RHSA-2016:1504 https://rhn.redhat.com/errata/RHSA-2016-1504.html