A use-after-free vulnerability when using an incorrect URL during the reloading of a docshell. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.Referenceshttps://bugzilla.mozilla.org/show_bug.cgi?id=1355039http://www.securityfocus.com/bid/99057https://www.mozilla.org/security/advisories/mfsa2017-15/https://www.debian.org/security/2017/dsa-3918http://www.securitytracker.com/id/1038689https://www.debian.org/security/2017/dsa-3881https://access.redhat.com/errata/RHSA-2017:1440https://access.redhat.com/errata/RHSA-2017:1561https://www.mozilla.org/security/advisories/mfsa2017-17/https://www.mozilla.org/security/advisories/mfsa2017-16/
