Mozilla developers and community identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code. Andrei Vaida, Jesse Ruderman, and Bob Clary reported memory safety problems and crashes that affect Firefox ESR 38.4 and Firefox 42. External Reference: https://www.mozilla.org/security/announce/2015/mfsa2015-134.html Acknowledgements: Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Andrei Vaida, Jesse Ruderman, and Bob Clary as the original reporter.
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 5 Via RHSA-2015:2657 https://rhn.redhat.com/errata/RHSA-2015-2657.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-2016:0001 https://rhn.redhat.com/errata/RHSA-2016-0001.html