A flaw was found in the way the Hotspot JVM class file verifier verified invokespecial calls. An untrusted Java application or applet could use this flaw to bypass Java sandbox restrictions.
Public now via Oracle Critical Patch Update - January 2015. Fixed in Oracle Java SE 6u91, 7u75, and 8u31. External References: http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html#AppendixJAVA
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Via RHSA-2015:0068 https://rhn.redhat.com/errata/RHSA-2015-0068.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Via RHSA-2015:0069 https://rhn.redhat.com/errata/RHSA-2015-0069.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Via RHSA-2015:0067 https://rhn.redhat.com/errata/RHSA-2015-0067.html
Upstream OpenJDK commits: http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/rev/d12c9850a885 http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/4b26b980ec8d
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 6 Via RHSA-2015:0080 https://rhn.redhat.com/errata/RHSA-2015-0080.html
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 7 Oracle Java for Red Hat Enterprise Linux 5 Oracle Java for Red Hat Enterprise Linux 6 Via RHSA-2015:0079 https://rhn.redhat.com/errata/RHSA-2015-0079.html
This issue was fixed in IcedTea6 1.13.6 and IcedTea7 2.5.4: http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2015-January/030488.html http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2015-January/030469.html
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 7 Oracle Java for Red Hat Enterprise Linux 6 Oracle Java for Red Hat Enterprise Linux 5 Via RHSA-2015:0086 https://rhn.redhat.com/errata/RHSA-2015-0086.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Via RHSA-2015:0085 https://rhn.redhat.com/errata/RHSA-2015-0085.html