Description
Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. 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 < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 112 | 112 |
| Mozilla | Focus for Android | unspecified – < 112 | 112 |
| Mozilla | Firefox ESR | unspecified – < 102.10 | 102.10 |
| Mozilla | Firefox for Android | unspecified – < 112 | 112 |
| Mozilla | Thunderbird | unspecified – < 102.10 | 102.10 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firefox-esr | 102.10.0esr-1 | — |
| Debian 14 | thunderbird | 1:102.10.0-1 | — |
| Debian 13 | firefox-esr | 102.10.0esr-1 | — |
| Debian 13 | thunderbird | 1:102.10.0-1 | — |
| Debian 12 | firefox-esr | 102.10.0esr-1 | — |
| Debian 12 | thunderbird | 1:102.10.0-1 | — |
| Debian 11 | firefox-esr | 102.10.0esr-1~deb11u1 | DSA-5385-1 |
| Debian 11 | thunderbird | 1:102.10.0-1~deb11u1 | DSA-5392-1 |
| Debian 10 | firefox-esr | 102.10.0esr-1~deb10u1 | DLA-3391-1 |
| Debian 10 | thunderbird | 1:102.10.0-1~deb10u1 | DLA-3400-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | mozjs102 | 102.11.0-0ubuntu0.22.04.1 | USN-6120-1 |
| Ubuntu 22.04 LTS | mozjs78 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:102.10.0+build2-0ubuntu0.22.04.1 | USN-6015-1 |
| Ubuntu 20.04 LTS | firefox | 112.0+build2-0ubuntu0.20.04.1 | USN-6010-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.10.0+build2-0ubuntu0.20.04.1 | USN-6015-1 |
| Ubuntu 18.04 LTS | firefox | 112.0+build2-0ubuntu0.18.04.1 | USN-6010-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:102.10.0+build2-0ubuntu0.18.04.1 | USN-6015-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +1 | 102.10.0-1.el9_1 | RHSA-2023:1786 |
| RHEL 9 | thunderbird | 102.10.0-2.el9_1 | RHSA-2023:1809 |
| RHEL 8 | firefox | 102.10.0-1.el8_7 | RHSA-2023:1787 |
| RHEL 8 | thunderbird | 102.10.0-2.el8_7 | RHSA-2023:1802 |
| RHEL 7 | firefox | 102.10.0-1.el7_9 | RHSA-2023:1791 |
| RHEL 7 | thunderbird | 102.10.0-2.el7_9 | RHSA-2023:1806 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox | 102.10.0-1.el9_0 | RHSA-2023:1785 |
| RHEL 9.0 EUS | thunderbird | 102.10.0-2.el9_0 | RHSA-2023:1810 |
| RHEL 8.6 EUS | firefox | 102.10.0-1.el8_6 | RHSA-2023:1788 |
| RHEL 8.6 EUS | thunderbird | 102.10.0-2.el8_6 | RHSA-2023:1811 |
| RHEL 8.4 EUS | firefox | 102.10.0-1.el8_4 | RHSA-2023:1790 |
| RHEL 8.4 EUS | thunderbird | 102.10.0-2.el8_4 | RHSA-2023:1804 |
| RHEL 8.2 TUS | firefox | 102.10.0-1.el8_2 | RHSA-2023:1789 |
| RHEL 8.2 TUS | thunderbird | 102.10.0-2.el8_2 | RHSA-2023:1805 |
| RHEL 8.2 E4S | firefox | 102.10.0-1.el8_2 | RHSA-2023:1789 |
| RHEL 8.2 E4S | thunderbird | 102.10.0-2.el8_2 | RHSA-2023:1805 |
| RHEL 8.2 AUS | firefox | 102.10.0-1.el8_2 | RHSA-2023:1789 |
| RHEL 8.2 AUS | thunderbird | 102.10.0-2.el8_2 | RHSA-2023:1805 |
| RHEL 8.1 E4S | firefox | 102.10.0-1.el8_1 | RHSA-2023:1792 |
| RHEL 8.1 E4S | thunderbird | 102.10.0-2.el8_1 | RHSA-2023:1803 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +1 | 102.10.0-1.el9_1.alma | ALSA-2023:1786 |
| AlmaLinux 9 | thunderbird | 102.10.0-2.el9_1.alma | ALSA-2023:1809 |
| AlmaLinux 8 | firefox | 102.10.0-1.el8_7.alma | ALSA-2023:1787 |
| AlmaLinux 8 | thunderbird | 102.10.0-2.el8_7.alma | ALSA-2023:1802 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | thunderbird | 102.10.0-2.el9_1 | RLSA-2023:1809 |
| Rocky Linux 8 | thunderbird | 102.10.0-2.el8_7 | RLSA-2023:1802 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.10.1-150200.8.113.2 | SUSE-SU-2023:2064-1 |
| SLES 15 SP3 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES 15 SP2 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES 15 SP1 | MozillaFirefox | 102.10.0-150000.150.82.1 | SUSE-SU-2023:1817-1 |
| SLES 12 SP5 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SLES 12 SP2 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.10.0-150000.150.82.1 | SUSE-SU-2023:1817-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.10.0-150000.150.82.1 | SUSE-SU-2023:1817-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 112.0.1-1.1 | openSUSE-SU-2024:12882-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.10.0-1.1 | openSUSE-SU-2024:12852-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.10.1-150200.8.113.2 | SUSE-SU-2023:2064-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.10.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.10.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.10.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.10.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.10.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.10.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.10.0-1.amzn2.0.1 | ALAS2-2023-2028 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +1 | 102.10.0-1.0.1.el9_1 | ELSA-2023-1786 |
| Oracle Linux 9 | thunderbird | 102.10.0-2.0.1.el9_1 | ELSA-2023-1809 |
| Oracle Linux 8 | firefox | 102.10.0-1.0.1.el8_7 | ELSA-2023-1787 |
| Oracle Linux 8 | thunderbird | 102.10.0-2.0.1.el8_7 | ELSA-2023-1802 |
| Oracle Linux 7 | firefox | 102.10.0-1.0.1.el7_9 | ELSA-2023-1791 |
| Oracle Linux 7 | thunderbird | 102.10.0-2.0.1.el7_9 | ELSA-2023-1806 |
Advisories 45
- ALSA-2023:1786 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1809 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1802 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1787 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- RHSA-2023:1811 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1809 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1810 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1806 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1804 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1805 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1803 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1792 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1802 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1790 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1791 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1789 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1787 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1788 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1785 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1786 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- USN-6120-1 mozjs102 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6015-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6010-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5392-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5385-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3400-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3391-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:1809 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:1802 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:12852-1 MozillaThunderbird-102.10.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12882-1 MozillaFirefox-112.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2064-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1817-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1855-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1819-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2023-2028 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 3, 2024
- WID-SEC-2023-0941 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023
- ELSA-2023-1809 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 18, 2023
- ELSA-2023-1802 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 18, 2023
- ELSA-2023-1806 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 18, 2023
- ELSA-2023-1791 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 17, 2023
- ELSA-2023-1786 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 14, 2023
- ELSA-2023-1787 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 14, 2023
References
- https://www.mozilla.org/security/advisories/mfsa2023-15/
- https://www.mozilla.org/security/advisories/mfsa2023-14/
- https://www.mozilla.org/security/advisories/mfsa2023-13/
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1720594%2C1812498%2C1814217%2C1818357%2C1751945%2C1818762%2C1819493%2C1820389%2C1820602%2C1821448%2C1822413%2C1824828