Description
Mozilla developers and community members Gabriele Svelto, Andrew Osmond, Emily McDonough, Sebastian Hengst, Andrew McCreight and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 112 and Firefox ESR 102.10. 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 < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 113 | 113 |
| Mozilla | Firefox ESR | unspecified – < 102.11 | 102.11 |
| Mozilla | Thunderbird | unspecified – < 102.11 | 102.11 |
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 | 102.11.0esr-1 | — |
| Debian 14 | thunderbird | 1:102.11.0-1 | — |
| Debian 13 | firefox-esr | 102.11.0esr-1 | — |
| Debian 13 | thunderbird | 1:102.11.0-1 | — |
| Debian 12 | firefox-esr | 102.11.0esr-1 | — |
| Debian 12 | thunderbird | 1:102.11.0-1 | — |
| Debian 11 | firefox-esr | 102.11.0esr-1~deb11u1 | DSA-5400-1 |
| Debian 11 | thunderbird | 1:102.11.0-1~deb11u1 | DSA-5403-1 |
| Debian 10 | firefox-esr | 102.11.0esr-1~deb10u1 | DLA-3417-1 |
| Debian 10 | thunderbird | 1:102.11.0-1~deb10u1 | DLA-3421-1 |
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 | 1:102.11.0+build1-0ubuntu0.22.04.1 | USN-6075-1 |
| Ubuntu 20.04 LTS | firefox | 113.0+build2-0ubuntu0.20.04.1 | USN-6074-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.11.0+build1-0ubuntu0.20.04.1 | USN-6075-1 |
| Ubuntu 18.04 LTS | firefox | 113.0+build2-0ubuntu0.18.04.1 | USN-6074-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:102.11.0+build1-0ubuntu0.18.04.1 | USN-6075-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +1 | 102.11.0-2.el9_2 | RHSA-2023:3143 |
| RHEL 9 | thunderbird | 102.11.0-1.el9_2 | RHSA-2023:3150 |
| RHEL 8 | firefox | 102.11.0-2.el8_7 | RHSA-2023:3220 |
| RHEL 8 | thunderbird | 102.11.0-1.el8_7 | RHSA-2023:3221 |
| RHEL 7 | firefox | 102.11.0-2.el7_9 | RHSA-2023:3137 |
| RHEL 7 | thunderbird | 102.11.0-1.el7_9 | RHSA-2023:3151 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox | 102.11.0-2.el9_0 | RHSA-2023:3142 |
| RHEL 9.0 EUS | thunderbird | 102.11.0-1.el9_0 | RHSA-2023:3149 |
| RHEL 8.6 EUS | firefox | 102.11.0-2.el8_6 | RHSA-2023:3141 |
| RHEL 8.6 EUS | thunderbird | 102.11.0-1.el8_6 | RHSA-2023:3155 |
| RHEL 8.4 EUS | firefox | 102.11.0-2.el8_4 | RHSA-2023:3140 |
| RHEL 8.4 EUS | thunderbird | 102.11.0-1.el8_4 | RHSA-2023:3154 |
| RHEL 8.2 TUS | firefox | 102.11.0-2.el8_2 | RHSA-2023:3139 |
| RHEL 8.2 TUS | thunderbird | 102.11.0-1.el8_2 | RHSA-2023:3153 |
| RHEL 8.2 E4S | firefox | 102.11.0-2.el8_2 | RHSA-2023:3139 |
| RHEL 8.2 E4S | thunderbird | 102.11.0-1.el8_2 | RHSA-2023:3153 |
| RHEL 8.2 AUS | firefox | 102.11.0-2.el8_2 | RHSA-2023:3139 |
| RHEL 8.2 AUS | thunderbird | 102.11.0-1.el8_2 | RHSA-2023:3153 |
| RHEL 8.1 E4S | firefox | 102.11.0-2.el8_1 | RHSA-2023:3138 |
| RHEL 8.1 E4S | thunderbird | 102.11.0-1.el8_1 | RHSA-2023:3152 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +1 | 102.11.0-2.el9_2.alma | ALSA-2023:3143 |
| AlmaLinux 9 | thunderbird | 102.11.0-1.el9_2.alma | ALSA-2023:3150 |
| AlmaLinux 8 | firefox | 102.11.0-2.el8_7.alma | ALSA-2023:3220 |
| AlmaLinux 8 | thunderbird | 102.11.0-1.el8_7.alma | ALSA-2023:3221 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | firefox | 102.11.0-2.el8_7 | RLSA-2023:3220 |
| Rocky Linux 8 | thunderbird | 102.11.0-1.el8_7 | RLSA-2023:3221 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.11.0-150200.8.116.1 | SUSE-SU-2023:2211-1 |
| SLES 15 SP3 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES 15 SP2 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES 15 SP1 | MozillaFirefox | 102.11.0-150000.150.85.1 | SUSE-SU-2023:2175-1 |
| SLES 12 SP5 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SLES 12 SP2 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.11.0-150000.150.85.1 | SUSE-SU-2023:2175-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.11.0-150000.150.85.1 | SUSE-SU-2023:2175-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 113.0-1.1 | openSUSE-SU-2024:12920-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.11.0-1.1 | openSUSE-SU-2024:12921-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.11.0-150200.8.116.1 | SUSE-SU-2023:2211-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.11.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.11.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.11.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.11.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.11.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.11.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.11.0-1.amzn2.0.1 | ALAS2-2023-2051 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +1 | 102.11.0-2.0.1.el9_2 | ELSA-2023-3143 |
| Oracle Linux 9 | thunderbird | 102.11.0-1.0.1.el9_2 | ELSA-2023-3150 |
| Oracle Linux 8 | firefox | 102.11.0-2.0.1.el8_7 | ELSA-2023-3220 |
| Oracle Linux 8 | thunderbird | 102.11.0-1.0.1.el8_7 | ELSA-2023-3221 |
| Oracle Linux 7 | firefox | 102.11.0-2.0.1.el7_9 | ELSA-2023-3137 |
| Oracle Linux 7 | thunderbird | 102.11.0-1.0.1.el7_9 | ELSA-2023-3151 |
Advisories 46
- ALSA-2023:3143 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:3150 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:3220 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:3221 Important: thunderbird 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-2023:3220 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3221 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3154 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3155 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3153 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3152 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3150 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3151 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3143 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3149 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3142 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3140 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3141 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3138 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3139 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3137 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-6120-1 mozjs102 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6075-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6074-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5400-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5403-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3421-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3417-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:3220 Important: firefox security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:3221 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2023:2173-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2175-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12920-1 MozillaFirefox-113.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2211-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2176-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12921-1 MozillaThunderbird-102.11.0-1.1 on GA media 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
- WID-SEC-2023-1172 Mozilla Firefox und Mozilla Firefox ESR: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 7, 2024
- WID-SEC-2023-1201 Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 20, 2023
- ELSA-2023-3220 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 8, 2023
- ALAS2-2023-2051 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 1, 2023
- ELSA-2023-3221 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 24, 2023
- ELSA-2023-3143 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 19, 2023
- ELSA-2023-3150 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 17, 2023
- ELSA-2023-3151 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 17, 2023
- ELSA-2023-3137 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 17, 2023