mozilla -- multiple vulnerabilities

Mozilla Foundation reports:

CVE-2016-2827 - Out-of-bounds read in mozilla::net::IsValidReferrerPolicy [low]
CVE-2016-5256 - Memory safety bugs fixed in Firefox 49 [critical]
CVE-2016-5257 - Memory safety bugs fixed in Firefox 49 and Firefox ESR 45.4 [critical]
CVE-2016-5270 - Heap-buffer-overflow in nsCaseTransformTextRunFactory::TransformString [high]
CVE-2016-5271 - Out-of-bounds read in PropertyProvider::GetSpacingInternal [low]
CVE-2016-5272 - Bad cast in nsImageGeometryMixin [high]
CVE-2016-5273 - crash in mozilla::a11y::HyperTextAccessible::GetChildOffset [high]
CVE-2016-5274 - use-after-free in nsFrameManager::CaptureFrameState [high]
CVE-2016-5275 - global-buffer-overflow in mozilla::gfx::FilterSupport::ComputeSourceNeededRegions [critical]
CVE-2016-5276 - Heap-use-after-free in mozilla::a11y::DocAccessible::ProcessInvalidationList [high]
CVE-2016-5277 - Heap-use-after-free in nsRefreshDriver::Tick [high]
CVE-2016-5278 - Heap-buffer-overflow in nsBMPEncoder::AddImageFrame [critical]
CVE-2016-5279 - Full local path of files is available to web pages after drag and drop [moderate]
CVE-2016-5280 - Use-after-free in mozilla::nsTextNodeDirectionalityMap::RemoveElementFromMap [high]
CVE-2016-5281 - use-after-free in DOMSVGLength [high]
CVE-2016-5282 - Don’t allow content to request favicons from non-whitelisted schemes [moderate]
CVE-2016-5283 - <iframe src> fragment timing attack can reveal cross-origin data [high]
CVE-2016-5284 - Add-on update site certificate pin expiration [high]