Description
Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 116 | 116 |
| Mozilla | Firefox ESR | unspecified – < 102.14, unspecified – < 115.1 | 102.14 |
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 | 115.1.0esr-1 | — |
| Debian 14 | thunderbird | 1:115.1.0-1 | — |
| Debian 13 | firefox-esr | 115.1.0esr-1 | — |
| Debian 13 | thunderbird | 1:115.1.0-1 | — |
| Debian 12 | firefox-esr | 102.14.0esr-1~deb12u1 | DSA-5464-1 |
| Debian 12 | thunderbird | 1:102.14.0-1~deb12u1 | DSA-5469-1 |
| Debian 11 | firefox-esr | 102.14.0esr-1~deb11u1 | DSA-5464-1 |
| Debian 11 | thunderbird | 1:102.14.0-1~deb11u1 | DSA-5469-1 |
| Debian 10 | firefox-esr | 102.14.0esr-1~deb10u1 | DLA-3523-1 |
| Debian 10 | thunderbird | 1:102.14.0-1~deb10u1 | DLA-3521-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | mozjs102 | No fix yet | — |
| Ubuntu 22.04 LTS | mozjs78 +2 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:102.15.0+build1-0ubuntu0.22.04.1 | USN-6333-1 |
| Ubuntu 20.04 LTS | firefox | 116.0+build2-0ubuntu0.20.04.2 | USN-6267-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.15.0+build1-0ubuntu0.20.04.1 | USN-6333-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +2 | 102.14.0-1.el9_2 | RHSA-2023:4499, RHSA-2023:4462 |
| RHEL 8 | firefox +1 | 102.14.0-1.el8_8 | RHSA-2023:4497, RHSA-2023:4468 |
| RHEL 7 | firefox +1 | 102.14.0-1.el7_9 | RHSA-2023:4495, RHSA-2023:4461 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox +1 | 102.14.0-1.el9_0 | RHSA-2023:4494, RHSA-2023:4465 |
| RHEL 8.6 EUS | firefox +1 | 102.14.0-1.el8_6 | RHSA-2023:4493, RHSA-2023:4463 |
| RHEL 8.4 TUS | firefox +1 | 102.14.0-1.el8_4 | RHSA-2023:4500, RHSA-2023:4469 |
| RHEL 8.4 E4S | firefox +1 | 102.14.0-1.el8_4 | RHSA-2023:4500, RHSA-2023:4469 |
| RHEL 8.4 AUS | firefox +1 | 102.14.0-1.el8_4 | RHSA-2023:4500, RHSA-2023:4469 |
| RHEL 8.2 TUS | firefox +1 | 102.14.0-1.el8_2 | RHSA-2023:4496, RHSA-2023:4460 |
| RHEL 8.2 E4S | firefox +1 | 102.14.0-1.el8_2 | RHSA-2023:4496, RHSA-2023:4460 |
| RHEL 8.2 AUS | firefox +1 | 102.14.0-1.el8_2 | RHSA-2023:4496, RHSA-2023:4460 |
| RHEL 8.1 E4S | firefox +1 | 102.14.0-1.el8_1 | RHSA-2023:4492, RHSA-2023:4464 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +2 | 102.14.0-1.el9_2.alma | ALSA-2023:4499, ALSA-2023:4462 |
| AlmaLinux 8 | firefox +1 | 102.14.0-1.el8_8.alma | ALSA-2023:4497, ALSA-2023:4468 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | firefox +1 | 102.14.0-1.el9_2 | RLSA-2023:4499, RLSA-2023:4462 |
| Rocky Linux 8 | firefox +1 | 102.14.0-1.el8_8 | RLSA-2023:4497, RLSA-2023:4468 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| SLES 15 SP5 | MozillaThunderbird | 115.1.0-150200.8.127.1 | SUSE-SU-2023:3228-1 |
| SLES 15 SP4 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| SLES 15 SP4 | MozillaThunderbird | 115.1.0-150200.8.127.1 | SUSE-SU-2023:3228-1 |
| SLES 15 SP3 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| SLES 15 SP2 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| SLES 15 SP1 | MozillaFirefox | 115.1.0-150000.150.97.1 | SUSE-SU-2023:3163-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 115.1.0-112.173.1 | SUSE-SU-2023:3161-1 |
| SLES 12 SP2 | MozillaFirefox | 115.1.0-112.173.1 | SUSE-SU-2023:3161-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 115.1.0-150000.150.97.1 | SUSE-SU-2023:3163-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 115.1.0-112.173.1 | SUSE-SU-2023:3161-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 115.1.0-150000.150.97.1 | SUSE-SU-2023:3163-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 116.0.2-1.1 | openSUSE-SU-2024:13124-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.14.0-1.1 | openSUSE-SU-2024:13091-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.5 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| openSUSE Leap 15.5 | MozillaThunderbird | 115.1.0-150200.8.127.1 | SUSE-SU-2023:3228-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 115.1.0-150200.152.99.1 | SUSE-SU-2023:3162-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 115.1.0-150200.8.127.1 | SUSE-SU-2023:3228-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 115.1.0-r0 | — |
| Alpine v3.22 | firefox-esr | 115.1.0-r0 | — |
| Alpine v3.21 | firefox-esr | 115.1.0-r0 | — |
| Alpine v3.20 | firefox-esr | 115.1.0-r0 | — |
| Alpine v3.19 | firefox-esr | 115.1.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 115.1.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +2 | 102.14.0-1.0.1.el9_2 | ELSA-2023-4499, ELSA-2023-4462 |
| Oracle Linux 8 | firefox +1 | 102.14.0-1.0.1.el8_8 | ELSA-2023-4497, ELSA-2023-4468 |
| Oracle Linux 7 | firefox +1 | 102.14.0-1.0.1.el7_9 | ELSA-2023-4495, ELSA-2023-4461 |
Advisories 45
- ALSA-2023:4462 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:4499 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:4468 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:4497 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2023-2917 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 30, 2026
- RHSA-2023:4500 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4499 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4497 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4495 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4496 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4493 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4494 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4492 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4468 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4469 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4465 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4463 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4464 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4462 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4461 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4460 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-6333-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6267-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5469-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5464-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3523-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3521-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:4497 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:4499 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:4468 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2023:4462 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:13091-1 MozillaThunderbird-102.14.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3162-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3163-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13124-1 MozillaFirefox-116.0.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3228-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3161-1 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
- WID-SEC-2023-1934 Mozilla Firefox und Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 3, 2024
- ELSA-2023-4497 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 9, 2023
- ELSA-2023-4499 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 8, 2023
- ELSA-2023-4495 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 8, 2023
- ELSA-2023-4461 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 6, 2023
- ELSA-2023-4462 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 4, 2023
- ELSA-2023-4468 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 4, 2023
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1842658
- https://www.mozilla.org/security/advisories/mfsa2023-29/
- https://www.mozilla.org/security/advisories/mfsa2023-30/
- https://www.mozilla.org/security/advisories/mfsa2023-31/
- https://www.debian.org/security/2023/dsa-5464
- https://www.debian.org/security/2023/dsa-5469
- https://lists.debian.org/debian-lts-announce/2023/08/msg00008.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00010.html