CVE-2019-9796

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.

• CWE-416

• https://access.redhat.com/errata/RHSA-2019:0966Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:1144Third Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1531277Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-07/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-08/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-11/Vendor Advisory
• https://access.redhat.com/errata/RHSA-2019:0966Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:1144Third Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1531277Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-07/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-08/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-11/Vendor Advisory

Published

Apr 26, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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