Red Hat Security Advisory: thunderbird security update

CVE-2016-1521 — graphite2: Out-of-bound read vulnerability triggered by crafted fonts CVE-2016-1522 — graphite2: Null pointer dereference and out-of-bounds access vulnerabilities CVE-2016-1523 — graphite2: Heap-based buffer overflow in context item handling functionality CVE-2016-1930 — Mozilla: Miscellaneous memory safety hazards (rv:38.6) (MFSA 2016-01) CVE-2016-1935 — Mozilla: Buffer overflow in WebGL after out of memory allocation (MFSA 2016-03)