mozilla firefox is vulnerable to use-after-free vulnerability. Attackers can execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by leveraging keyboard access to use the Alt key during selection of top-level menu items.
lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
rhn.redhat.com/errata/RHSA-2016-1551.html
www.debian.org/security/2016/dsa-3640
www.mozilla.org/security/announce/2016/mfsa2016-70.html
www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
www.securityfocus.com/bid/92261
www.securitytracker.com/id/1036508
www.ubuntu.com/usn/USN-3044-1
access.redhat.com/security/updates/classification/#critical
bugzilla.mozilla.org/show_bug.cgi?id=1266963
rhn.redhat.com/errata/RHSA-2016-1551.html
security.gentoo.org/glsa/201701-15
www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/#firefoxesr45.3