CVE ID:	CVE-2019-9796
Description:	A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2019-9796 https://bugzilla.mozilla.org/show_bug.cgi?id=1531277 https://www.mozilla.org/security/advisories/mfsa2019-07/ https://www.mozilla.org/security/advisories/mfsa2019-08/ https://www.mozilla.org/security/advisories/mfsa2019-11/ RedHat Security Advisories: RHSA-2019:0966 https://access.redhat.com/errata/RHSA-2019:0966 RedHat Security Advisories: RHSA-2019:1144 https://access.redhat.com/errata/RHSA-2019:1144