Description
Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. This could lead to a potentially exploitable crash. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 111 | 111 |
| Mozilla | Firefox ESR | unspecified – < 102.9 | 102.9 |
| Mozilla | Thunderbird | unspecified – < 102.9 | 102.9 |
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 | 102.9.0esr-1 | — |
| Debian 14 | thunderbird | 1:102.9.0-1 | — |
| Debian 13 | firefox-esr | 102.9.0esr-1 | — |
| Debian 13 | thunderbird | 1:102.9.0-1 | — |
| Debian 12 | firefox-esr | 102.9.0esr-1 | — |
| Debian 12 | thunderbird | 1:102.9.0-1 | — |
| Debian 11 | firefox-esr | 102.9.0esr-1~deb11u1 | DSA-5374-1 |
| Debian 11 | thunderbird | 1:102.9.0-1~deb11u1 | DSA-5375-1 |
| Debian 10 | firefox-esr | 102.9.0esr-1~deb10u1 | DLA-3364-1 |
| Debian 10 | thunderbird | 1:102.9.0-1~deb10u1 | DLA-3365-1 |
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 | 1:102.9.0+build1-0ubuntu0.22.04.1 | USN-5972-1 |
| Ubuntu 20.04 LTS | firefox | 111.0+build2-0ubuntu0.20.04.1 | USN-5954-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.9.0+build1-0ubuntu0.20.04.1 | USN-5972-1 |
| Ubuntu 18.04 LTS | firefox | 111.0+build2-0ubuntu0.18.04.1 | USN-5954-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:102.9.0+build1-0ubuntu0.18.04.1 | USN-5972-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +1 | 102.9.0-3.el9_1 | RHSA-2023:1337 |
| RHEL 9 | thunderbird | 102.9.0-1.el9_1 | RHSA-2023:1407 |
| RHEL 8 | firefox | 102.9.0-3.el8_7 | RHSA-2023:1336 |
| RHEL 8 | thunderbird | 102.9.0-1.el8_7 | RHSA-2023:1403 |
| RHEL 7 | firefox | 102.9.0-3.el7_9 | RHSA-2023:1333 |
| RHEL 7 | thunderbird | 102.9.0-1.el7_9 | RHSA-2023:1401 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox | 102.9.0-3.el9_0 | RHSA-2023:1364 |
| RHEL 9.0 EUS | thunderbird | 102.9.0-1.el9_0 | RHSA-2023:1402 |
| RHEL 8.6 EUS | firefox | 102.9.0-3.el8_6 | RHSA-2023:1367 |
| RHEL 8.6 EUS | thunderbird | 102.9.0-1.el8_6 | RHSA-2023:1404 |
| RHEL 8.4 EUS | firefox | 102.9.0-4.el8_4 | RHSA-2023:1444 |
| RHEL 8.4 EUS | thunderbird | 102.9.0-2.el8_4 | RHSA-2023:1472 |
| RHEL 8.2 TUS | firefox | 102.9.0-4.el8_2 | RHSA-2023:1445 |
| RHEL 8.2 TUS | thunderbird | 102.9.0-2.el8_2 | RHSA-2023:1443 |
| RHEL 8.2 E4S | firefox | 102.9.0-4.el8_2 | RHSA-2023:1445 |
| RHEL 8.2 E4S | thunderbird | 102.9.0-2.el8_2 | RHSA-2023:1443 |
| RHEL 8.2 AUS | firefox | 102.9.0-4.el8_2 | RHSA-2023:1445 |
| RHEL 8.2 AUS | thunderbird | 102.9.0-2.el8_2 | RHSA-2023:1443 |
| RHEL 8.1 E4S | firefox | 102.9.0-4.el8_1 | RHSA-2023:1479 |
| RHEL 8.1 E4S | thunderbird | 102.9.0-2.el8_1 | RHSA-2023:1442 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +1 | 102.9.0-3.el9_1.alma | ALSA-2023:1337 |
| AlmaLinux 9 | thunderbird | 102.9.0-1.el9_1.alma | ALSA-2023:1407 |
| AlmaLinux 8 | firefox | 102.9.0-3.el8_7.alma | ALSA-2023:1336 |
| AlmaLinux 8 | thunderbird | 102.9.0-1.el8_7.alma | ALSA-2023:1403 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | firefox | 102.9.0-3.el9_1 | RLSA-2023:1337 |
| Rocky Linux 9 | thunderbird | 102.9.0-1.el9_1 | RLSA-2023:1407 |
| Rocky Linux 8 | firefox | 102.9.0-3.el8_7 | RLSA-2023:1336 |
| Rocky Linux 8 | thunderbird | 102.9.0-1.el8_7 | RLSA-2023:1403 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.9.1-150200.8.110.2 | SUSE-SU-2023:1736-1 |
| SLES 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SLES 12 SP5 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES 12 SP2 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 111.0.1-1.1 | openSUSE-SU-2024:12839-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.9.0-1.1 | openSUSE-SU-2024:12791-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.9.1-150200.8.110.2 | SUSE-SU-2023:1736-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.9.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.9.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.9.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.9.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.9.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.9.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.9.0-1.amzn2.0.1 | ALAS2-2023-1988 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +1 | 102.9.0-3.0.1.el9_1 | ELSA-2023-1337 |
| Oracle Linux 9 | thunderbird | 102.9.0-1.0.1.el9_1 | ELSA-2023-1407 |
| Oracle Linux 8 | firefox | 102.9.0-3.0.1.el8_7 | ELSA-2023-1336 |
| Oracle Linux 8 | thunderbird | 102.9.0-1.0.1.el8_7 | ELSA-2023-1403 |
| Oracle Linux 7 | firefox | 102.9.0-3.0.1.el7_9 | ELSA-2023-1333 |
| Oracle Linux 7 | thunderbird | 102.9.0-1.0.1.el7_9 | ELSA-2023-1401 |
Advisories 48
- ALSA-2023:1337 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1407 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1403 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1336 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:1401 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:1333 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-6120-1 mozjs102 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-5972-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-5954-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5375-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5374-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3364-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3365-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:1337 Important: firefox security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:1336 Important: firefox security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:1403 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2023:1407 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:12839-1 MozillaFirefox-111.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12791-1 MozillaThunderbird-102.9.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0835-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0728-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1736-1 Security update for MozillaThunderbird 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
- RHSA-2023:1472 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1479 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1445 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1443 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1444 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1442 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1407 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1403 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1404 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1402 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1367 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1337 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1364 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:1336 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- WID-SEC-2023-1424 Xerox FreeFlow Print Server für Solaris: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- SUSE-SU-2023:0763-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-0643 Mozilla Firefox: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023
- WID-SEC-2023-0673 Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 29, 2023
- ELSA-2023-1407 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Mar 22, 2023
- ELSA-2023-1403 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 22, 2023
- ELSA-2023-1401 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 22, 2023
- ALAS2-2023-1988 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 21, 2023
- ELSA-2023-1333 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 20, 2023
- ELSA-2023-1337 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Mar 20, 2023
- ELSA-2023-1336 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 20, 2023