A use-after-free has been found in Firefox < 54.0 and Thunderbird < 52.2, during video control operations when a <track> element holds a reference to an older window if that window has been replaced in the DOM.
A use-after-free has been found in Firefox < 54.0 and Thunderbird < 52.2, during video control operations when a <track> element holds a reference to an older window if that window has been replaced in the DOM.
https://www.mozilla.org/en-US/security/advisories/mfsa2017-15/#CVE-2017-7750 https://bugzilla.mozilla.org/show_bug.cgi?id=1356558