When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.
openSUSE Leap 15.1 openSUSE Leap 15.2 openSUSE Leap 15.3 openSUSE Leap 15.4 openSUSE Tumbleweed SUSE Linux Enterprise Desktop 15 SP1 SUSE Linux Enterprise Desktop 15 SP2 SUSE Linux Enterprise Desktop 15 SP4 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP2 SUSE Linux Enterprise Server 15 SP1 SUSE Linux Enterprise Server 15 SP2 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP1 SUSE Linux Enterprise Server for SAP Applications 15 SP2 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Workstation Extension 15 SP1 SUSE Linux Enterprise Workstation Extension 15 SP2 SUSE Linux Enterprise Workstation Extension 15 SP4