A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.
www.securityfocus.com/bid/105460
www.securitytracker.com/id/1041770
access.redhat.com/errata/RHSA-2018:2881
access.redhat.com/errata/RHSA-2018:2884
bugzilla.mozilla.org/show_bug.cgi?id=1493903
security.gentoo.org/glsa/201810-01
usn.ubuntu.com/3778-1/
www.debian.org/security/2018/dsa-4310
www.mozilla.org/security/advisories/mfsa2018-24/