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.
History

Tue, 25 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2019-04-26T16:13:22

Updated: 2024-08-04T22:01:54.698Z

Reserved: 2019-03-14T00:00:00

Link: CVE-2019-9796

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-04-26T17:29:02.477

Modified: 2025-11-25T17:50:16.803

Link: CVE-2019-9796

cve-icon Redhat

Severity : Important

Publid Date: 2019-03-20T00:00:00Z

Links: CVE-2019-9796 - Bugzilla