Description
If a garbage collection was triggered at the right time, a use-after-free could have occurred during object transplant. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 127 | 127 |
| Mozilla | Firefox ESR | unspecified – < 115.12 | 115.12 |
| Mozilla | Thunderbird | unspecified – < 115.12 | 115.12 |
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 | 115.12.0esr-1 | — |
| Debian 14 | thunderbird | 1:115.12.0-1 | — |
| Debian 13 | firefox-esr | 115.12.0esr-1 | — |
| Debian 13 | thunderbird | 1:115.12.0-1 | — |
| Debian 12 | firefox-esr | 115.12.0esr-1~deb12u1 | DSA-5709-1 |
| Debian 12 | thunderbird | 1:115.12.0-1~deb12u1 | DSA-5711-1 |
| Debian 11 | firefox-esr | 115.12.0esr-1~deb11u1 | DSA-5709-1 |
| Debian 11 | thunderbird | 1:115.12.0-1~deb11u1 | DSA-5711-1 |
| Debian 10 | firefox-esr | 115.12.0esr-1~deb10u1 | DLA-3825-1 |
| Debian 10 | thunderbird | 1:115.12.0-1~deb10u1 | DLA-3836-1 |
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 | 1:115.12.0+build3-0ubuntu0.22.04.1 | USN-6840-1 |
| Ubuntu 20.04 LTS | firefox | 127.0.2+build1-0ubuntu0.20.04.1 | USN-6862-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:115.12.0+build3-0ubuntu0.20.04.1 | USN-6840-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +1 | 115.12.0-1.el9_4 | RHSA-2024:3955 |
| RHEL 9 | thunderbird | 115.12.1-1.el9_4 | RHSA-2024:4002 |
| RHEL 8 | firefox | 115.12.0-1.el8_10 | RHSA-2024:3954 |
| RHEL 8 | thunderbird | 115.12.1-1.el8_10 | RHSA-2024:4036 |
| RHEL 7 | firefox | 115.12.0-1.el7_9 | RHSA-2024:3951 |
| RHEL 7 | thunderbird | 115.12.1-1.el7_9 | RHSA-2024:4016 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.2 EUS | firefox +1 | 115.12.0-1.el9_2 | RHSA-2024:3949 |
| RHEL 9.2 EUS | thunderbird | 115.12.1-1.el9_2 | RHSA-2024:4004 |
| RHEL 9.0 E4S | firefox | 115.12.0-1.el9_0 | RHSA-2024:3958 |
| RHEL 9.0 E4S | thunderbird | 115.12.1-1.el9_0 | RHSA-2024:4015 |
| RHEL 8.8 EUS | firefox | 115.12.0-1.el8_8 | RHSA-2024:3950 |
| RHEL 8.8 EUS | thunderbird | 115.12.1-1.el8_8 | RHSA-2024:4018 |
| RHEL 8.6 TUS | firefox | 115.12.0-1.el8_6 | RHSA-2024:3972 |
| RHEL 8.6 TUS | thunderbird | 115.12.1-1.el8_6 | RHSA-2024:4063 |
| RHEL 8.6 E4S | firefox | 115.12.0-1.el8_6 | RHSA-2024:3972 |
| RHEL 8.6 E4S | thunderbird | 115.12.1-1.el8_6 | RHSA-2024:4063 |
| RHEL 8.6 AUS | firefox | 115.12.0-1.el8_6 | RHSA-2024:3972 |
| RHEL 8.6 AUS | thunderbird | 115.12.1-1.el8_6 | RHSA-2024:4063 |
| RHEL 8.4 TUS | firefox | 115.12.0-1.el8_4 | RHSA-2024:3953 |
| RHEL 8.4 TUS | thunderbird | 115.12.1-1.el8_4 | RHSA-2024:4003 |
| RHEL 8.4 E4S | firefox | 115.12.0-1.el8_4 | RHSA-2024:3953 |
| RHEL 8.4 E4S | thunderbird | 115.12.1-1.el8_4 | RHSA-2024:4003 |
| RHEL 8.4 AUS | firefox | 115.12.0-1.el8_4 | RHSA-2024:3953 |
| RHEL 8.4 AUS | thunderbird | 115.12.1-1.el8_4 | RHSA-2024:4003 |
| RHEL 8.2 AUS | firefox | 115.12.0-1.el8_2 | RHSA-2024:3952 |
| RHEL 8.2 AUS | thunderbird | 115.12.1-1.el8_2 | RHSA-2024:4001 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +1 | 115.12.0-1.el9_4.alma.1 | ALSA-2024:3955 |
| AlmaLinux 9 | thunderbird | 115.12.1-1.el9_4.alma.1 | ALSA-2024:4002 |
| AlmaLinux 8 | firefox | 115.12.0-1.el8_10.alma.1 | ALSA-2024:3954 |
| AlmaLinux 8 | thunderbird | 115.12.1-1.el8_10.alma.1 | ALSA-2024:4036 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | firefox | 115.12.0-1.el9_4 | RLSA-2024:3955 |
| Rocky Linux 9 | thunderbird | 115.12.1-1.el9_4 | RLSA-2024:4002 |
| Rocky Linux 8 | firefox | 115.12.0-1.el8_10 | RLSA-2024:3954 |
| Rocky Linux 8 | thunderbird | 115.12.1-1.el8_10 | RLSA-2024:4036 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLES 15 SP6 | MozillaThunderbird | 115.12.0-150200.8.163.1 | SUSE-SU-2024:2073-1 |
| SLES 15 SP5 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLES 15 SP5 | MozillaThunderbird | 115.12.0-150200.8.163.1 | SUSE-SU-2024:2073-1 |
| SLES 15 SP4 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLES 15 SP3 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLES 15 SP2 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 115.12.0-112.215.1 | SUSE-SU-2024:2371-1, SUSE-SU-2024:2012-1 |
| SLES for SAP 15 SP4 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 115.12.0-112.215.1 | SUSE-SU-2024:2371-1, SUSE-SU-2024:2012-1 |
| SLE HPC 15 SP4 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 127.0-1.1 | openSUSE-SU-2024:14044-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 115.12.0-1.1 | openSUSE-SU-2024:14049-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.6 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| openSUSE Leap 15.6 | MozillaThunderbird | 115.12.0-150200.8.163.1 | SUSE-SU-2024:2073-1 |
| openSUSE Leap 15.5 | MozillaFirefox | 115.12.0-150200.152.140.2 | SUSE-SU-2024:2399-1, SUSE-SU-2024:2061-1 |
| openSUSE Leap 15.5 | MozillaThunderbird | 115.12.0-150200.8.163.1 | SUSE-SU-2024:2073-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +1 | 115.12.0-1.0.1.el9_4 | ELSA-2024-3955 |
| Oracle Linux 9 | thunderbird | 115.12.1-1.0.1.el9_4 | ELSA-2024-4002 |
| Oracle Linux 8 | firefox | 115.12.0-1.0.1.el8_10 | ELSA-2024-3954 |
| Oracle Linux 8 | thunderbird | 115.12.1-1.0.1.el8_10 | ELSA-2024-4036 |
| Oracle Linux 7 | firefox | 115.12.0-1.0.1.el7_9 | ELSA-2024-3951 |
| Oracle Linux 7 | thunderbird | 115.12.1-1.0.1.el7_9 | ELSA-2024-4016 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | firefox | 127.0.2-r0 | — |
Advisories 47
- ALSA-2024:4002 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:3955 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:4036 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:3954 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:4016 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2024:3951 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-6862-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6840-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- RHSA-2024:3953 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4036 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4001 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4002 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4018 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4063 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4003 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4004 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4015 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:3955 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:3954 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:3958 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:3949 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:3972 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:3950 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:3952 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- DSA-5709-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5711-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3825-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3836-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:3954 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2024:3955 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2024:4036 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2024:4002 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:14044-1 MozillaFirefox-127.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2073-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2399-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2061-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14049-1 MozillaThunderbird-115.12.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2371-1 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-2024:2012-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-1346 Mozilla Firefox: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 15, 2024
- ELSA-2024-4002 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 20, 2024
- ELSA-2024-4036 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 20, 2024
- ELSA-2024-4016 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 20, 2024
- ELSA-2024-3955 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 17, 2024
- ELSA-2024-3954 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 17, 2024
- ELSA-2024-3951 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 17, 2024
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1895086
- https://lists.debian.org/debian-lts-announce/2024/06/msg00000.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00010.html
- https://www.mozilla.org/security/advisories/mfsa2024-25/
- https://www.mozilla.org/security/advisories/mfsa2024-26/
- https://www.mozilla.org/security/advisories/mfsa2024-28/