Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 135, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2025:1066 https://access.redhat.com/errata/RHSA-2025:1066
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Advanced Update Support Via RHSA-2025:1133 https://access.redhat.com/errata/RHSA-2025:1133
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Red Hat Enterprise Linux 8.4 Telecommunications Update Service Via RHSA-2025:1135 https://access.redhat.com/errata/RHSA-2025:1135
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Via RHSA-2025:1138 https://access.redhat.com/errata/RHSA-2025:1138
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat Enterprise Linux 8.6 Telecommunications Update Service Via RHSA-2025:1136 https://access.redhat.com/errata/RHSA-2025:1136
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2025:1132 https://access.redhat.com/errata/RHSA-2025:1132
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Extended Update Support Via RHSA-2025:1137 https://access.redhat.com/errata/RHSA-2025:1137
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Extended Update Support Via RHSA-2025:1139 https://access.redhat.com/errata/RHSA-2025:1139
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2025:1140 https://access.redhat.com/errata/RHSA-2025:1140
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2025:1184 https://access.redhat.com/errata/RHSA-2025:1184
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2025:1283 https://access.redhat.com/errata/RHSA-2025:1283
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2025:1292 https://access.redhat.com/errata/RHSA-2025:1292
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Via RHSA-2025:1319 https://access.redhat.com/errata/RHSA-2025:1319
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Extended Update Support Via RHSA-2025:1317 https://access.redhat.com/errata/RHSA-2025:1317
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2025:1318 https://access.redhat.com/errata/RHSA-2025:1318
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Red Hat Enterprise Linux 8.4 Telecommunications Update Service Via RHSA-2025:1339 https://access.redhat.com/errata/RHSA-2025:1339
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Extended Update Support Via RHSA-2025:1340 https://access.redhat.com/errata/RHSA-2025:1340
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat Enterprise Linux 8.6 Telecommunications Update Service Via RHSA-2025:1341 https://access.redhat.com/errata/RHSA-2025:1341
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Advanced Update Support Via RHSA-2025:1348 https://access.redhat.com/errata/RHSA-2025:1348