Description
On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | — | 115.26 |
| Mozilla | Thunderbird | — | 128.13 |
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 | 128.13.0esr-1 | — |
| Debian 14 | thunderbird | 1:128.13.0esr-1 | — |
| Debian 13 | firefox-esr | 128.13.0esr-1 | — |
| Debian 13 | thunderbird | 1:128.13.0esr-1 | — |
| Debian 12 | firefox-esr | 128.13.0esr-1~deb12u1 | DSA-5964-1 |
| Debian 12 | thunderbird | 1:128.13.0esr-1~deb12u1 | DSA-5966-1 |
| Debian 11 | firefox-esr | 128.13.0esr-1~deb11u1 | DLA-4250-1 |
| Debian 11 | thunderbird | 1:128.13.0esr-1~deb11u1 | DLA-4253-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | mozjs102 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | mozjs78 +2 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:140.7.1+build1-0ubuntu0.22.04.1 | — |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | firefox | 128.13.0-1.el10_0 | RHSA-2025:11797 |
| RHEL 10 | thunderbird | 128.13.0-3.el10_0 | RHSA-2025:12188 |
| RHEL 9 | firefox +1 | 128.13.0-1.el9_6 | RHSA-2025:11748 |
| RHEL 9 | thunderbird | 128.13.0-3.el9_6 | RHSA-2025:12187 |
| RHEL 8 | firefox | 128.13.0-1.el8_10 | RHSA-2025:11747 |
| RHEL 8 | thunderbird | 128.13.0-3.el8_10 | RHSA-2025:13676 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.4 EUS | firefox +1 | 128.13.0-1.el9_4 | RHSA-2025:12044 |
| RHEL 9.4 EUS | thunderbird | 128.13.0-3.el9_4 | RHSA-2025:13649 |
| RHEL 9.2 E4S | firefox +1 | 128.13.0-1.el9_2 | RHSA-2025:12045 |
| RHEL 9.2 E4S | thunderbird | 128.13.0-3.el9_2 | RHSA-2025:13648 |
| RHEL 9.0 E4S | firefox | 128.13.0-1.el9_0 | RHSA-2025:12046 |
| RHEL 9.0 E4S | thunderbird | 128.13.0-3.el9_0 | RHSA-2025:13647 |
| RHEL 8.8 TUS | firefox | 128.13.0-1.el8_8 | RHSA-2025:12360 |
| RHEL 8.8 TUS | thunderbird | 128.13.0-3.el8_8 | RHSA-2025:13650 |
| RHEL 8.8 E4S | firefox | 128.13.0-1.el8_8 | RHSA-2025:12360 |
| RHEL 8.8 E4S | thunderbird | 128.13.0-3.el8_8 | RHSA-2025:13650 |
| RHEL 8.6 TUS | firefox | 128.13.0-1.el8_6 | RHSA-2025:12361 |
| RHEL 8.6 TUS | thunderbird | 128.13.0-3.el8_6 | RHSA-2025:13651 |
| RHEL 8.6 E4S | firefox | 128.13.0-1.el8_6 | RHSA-2025:12361 |
| RHEL 8.6 E4S | thunderbird | 128.13.0-3.el8_6 | RHSA-2025:13651 |
| RHEL 8.6 AUS | firefox | 128.13.0-1.el8_6 | RHSA-2025:12361 |
| RHEL 8.6 AUS | thunderbird | 128.13.0-3.el8_6 | RHSA-2025:13651 |
| RHEL 8.4 EUS Long Life | firefox | 128.13.0-1.el8_4 | RHSA-2025:12302 |
| RHEL 8.4 EUS Long Life | thunderbird | 128.13.0-3.el8_4 | RHSA-2025:13646 |
| RHEL 8.4 AUS | firefox | 128.13.0-1.el8_4 | RHSA-2025:12302 |
| RHEL 8.4 AUS | thunderbird | 128.13.0-3.el8_4 | RHSA-2025:13646 |
| RHEL 8.2 AUS | firefox | 128.13.0-1.el8_2 | RHSA-2025:12353 |
| RHEL 8.2 AUS | thunderbird | 128.13.0-3.el8_2 | RHSA-2025:13645 |
| RHEL 7 ELS | firefox | 128.13.0-1.el7_9 | RHSA-2025:12278 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | firefox | 128.13.0-1.el10_0 | ALSA-2025:11797 |
| AlmaLinux 10 | thunderbird | 128.13.0-3.el10_0.alma.1 | ALSA-2025:12188 |
| AlmaLinux 9 | firefox +1 | 128.13.0-1.el9_6.alma.1 | ALSA-2025:11748 |
| AlmaLinux 9 | thunderbird | 128.13.0-3.el9_6.alma.1 | ALSA-2025:12187 |
| AlmaLinux 8 | firefox | 128.13.0-1.el8_10.alma.1 | ALSA-2025:11747 |
| AlmaLinux 8 | thunderbird | 128.13.0-3.el8_10.alma.1 | ALSA-2025:13676 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | firefox | 128.13.0-1.el10_0 | RLSA-2025:11797 |
| Rocky Linux 10 | thunderbird | 128.13.0-3.el10_0 | RLSA-2025:12188 |
| Rocky Linux 9 | firefox | 128.13.0-1.el9_6 | RLSA-2025:11748 |
| Rocky Linux 9 | thunderbird | 128.13.0-3.el9_6 | RLSA-2025:12187 |
| Rocky Linux 8 | firefox | 128.13.0-1.el8_10 | RLSA-2025:11747 |
| Rocky Linux 8 | thunderbird | 128.13.0-3.el8_10 | RLSA-2025:13676 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP7 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP7 | MozillaThunderbird | 140.1.0-150200.8.230.1 | SUSE-SU-2025:02546-1 |
| SLES 15 SP7 | pipewire | 0.3.6-150200.3.11.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP6 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP6 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP6 | MozillaThunderbird | 140.1.0-150200.8.230.1 | SUSE-SU-2025:02546-1 |
| SLES 15 SP6 | pipewire | 0.3.6-150200.3.11.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP5 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP5 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP5 | pipewire | 0.3.64-150500.3.7.2 | SUSE-SU-2025:02529-1 |
| SLES 15 SP5 | xdg-desktop-portal | 1.16.0-150500.3.8.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP4 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP4 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP4 | pipewire | 0.3.49-150400.3.7.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP4 | xdg-desktop-portal | 1.10.1-150400.3.8.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP3 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP3 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP3 | pipewire | 0.3.24-150300.4.8.1 | SUSE-SU-2025:02529-1 |
| SLES 15 SP3 | xdg-desktop-portal | 1.8.0-150200.5.8.1 | SUSE-SU-2025:02529-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 140.1.0-112.273.1 | SUSE-SU-2025:02531-1 |
| SLES for SAP 16.0 | mozjs128 | 128.14.0-160000.1.1 | SUSE-SU-2025:21170-1 |
| SLES for SAP 15 SP5 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP5 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP5 | pipewire | 0.3.64-150500.3.7.2 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP5 | xdg-desktop-portal | 1.16.0-150500.3.8.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP4 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP4 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP4 | pipewire | 0.3.49-150400.3.7.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP4 | xdg-desktop-portal | 1.10.1-150400.3.8.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP3 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP3 | pipewire | 0.3.24-150300.4.8.1 | SUSE-SU-2025:02529-1 |
| SLES for SAP 15 SP3 | xdg-desktop-portal | 1.8.0-150200.5.8.1 | SUSE-SU-2025:02529-1 |
| SLES 16.0 | mozjs128 | 128.14.0-160000.1.1 | SUSE-SU-2025:21170-1 |
| SLE HPC 15 SP5 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP5 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP5 | pipewire | 0.3.64-150500.3.7.2 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP5 | xdg-desktop-portal | 1.16.0-150500.3.8.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP4 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP4 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP4 | pipewire | 0.3.49-150400.3.7.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP4 | xdg-desktop-portal | 1.10.1-150400.3.8.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP3 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP3 | pipewire | 0.3.24-150300.4.8.1 | SUSE-SU-2025:02529-1 |
| SLE HPC 15 SP3 | xdg-desktop-portal | 1.8.0-150200.5.8.1 | SUSE-SU-2025:02529-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| SUSE Enterprise Storage 7.1 | pipewire | 0.3.24-150300.4.8.1 | SUSE-SU-2025:02529-1 |
| SUSE Enterprise Storage 7.1 | xdg-desktop-portal | 1.8.0-150200.5.8.1 | SUSE-SU-2025:02529-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 141.0-1.1 | openSUSE-SU-2025:15386-1 |
| openSUSE Tumbleweed | firefox-esr +1 | 140.1.0-1.1 | openSUSE-SU-2025:15383-1, openSUSE-SU-2025:15371-1 |
| openSUSE Tumbleweed | mozjs128 | 128.13.0-1.1 | openSUSE-SU-2025:15387-1 |
| openSUSE Leap 16.0 | mozjs128 | 128.14.0-160000.1.1 | openSUSE-SU-2025:20135-1 |
| openSUSE Leap 15.6 | MozillaFirefox | 140.1.0-150200.152.193.1 | SUSE-SU-2025:02529-1 |
| openSUSE Leap 15.6 | MozillaFirefox-branding-SLE | 140-150200.9.21.1 | SUSE-SU-2025:02529-1 |
| openSUSE Leap 15.6 | MozillaThunderbird | 140.1.0-150200.8.230.1 | SUSE-SU-2025:02546-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | firefox | 140.1.0-1.amzn2023.0.2 | ALAS2023-2025-1148 |
| Amazon Linux 2 | thunderbird | 128.13.0-1.amzn2.0.1 | ALAS2-2025-2946 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | firefox | 128.13.0-1.0.1.el10_0 | ELSA-2025-11797 |
| Oracle Linux 10 | thunderbird | 128.13.0-3.0.1.el10_0 | ELSA-2025-12188 |
| Oracle Linux 9 | firefox +1 | 128.13.0-1.0.1.el9_6 | ELSA-2025-11748 |
| Oracle Linux 9 | thunderbird | 128.13.0-3.0.1.el9_6 | ELSA-2025-12187 |
| Oracle Linux 8 | firefox | 128.13.0-1.0.1.el8_10 | ELSA-2025-11747 |
| Oracle Linux 8 | thunderbird | 128.13.0-3.0.1.el8_10 | ELSA-2025-13676 |
| Oracle Linux 7 | firefox | 128.13.0-1.0.1.el7_9 | ELSA-2025-12278 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | firefox | 128.13-r0 | — |
Advisories 50
- ALSA-2025:12188 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:11797 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:12187 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:11748 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:11747 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:13676 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2025:13676 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:13651 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:13649 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:13650 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:13647 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:13648 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:13645 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:13646 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12361 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12360 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12353 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12302 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12278 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12188 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12187 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12046 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12045 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:12044 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:11797 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:11747 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2025:11748 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- WID-SEC-2025-1623 Mozilla Firefox , Firefox ESR und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 11, 2026
- openSUSE-SU-2025:20135-1 Security update for mozjs128 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15387-1 libmozjs-128-0-128.13.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15383-1 MozillaThunderbird-140.1.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15386-1 MozillaFirefox-141.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15371-1 firefox-esr-140.1.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21170-1 Security update for mozjs128 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02529-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLE SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4253-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4250-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5964-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5966-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2025:02546-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:02531-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2025:12188 Important: thunderbird security update Rocky Linux Security Advisories · Oct 8, 2025
- RLSA-2025:11797 Important: firefox security update Rocky Linux Security Advisories · Oct 8, 2025
- RLSA-2025:12187 Important: thunderbird security update Rocky Linux Security Advisories · Oct 7, 2025
- RLSA-2025:11748 Important: firefox security update Rocky Linux Security Advisories · Oct 4, 2025
- RLSA-2025:13676 Important: thunderbird security update Rocky Linux Security Advisories · Sep 8, 2025
- ALAS2023-2025-1148 Important: firefox security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 18, 2025
- ELSA-2025-13676 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 12, 2025
- ELSA-2025-12278 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 7, 2025
- ALAS2-2025-2946 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 4, 2025
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1971581
- https://www.mozilla.org/security/advisories/mfsa2025-56/
- https://www.mozilla.org/security/advisories/mfsa2025-57/
- https://www.mozilla.org/security/advisories/mfsa2025-58/
- https://www.mozilla.org/security/advisories/mfsa2025-59/
- https://www.mozilla.org/security/advisories/mfsa2025-61/
- https://www.mozilla.org/security/advisories/mfsa2025-62/
- https://www.mozilla.org/security/advisories/mfsa2025-63/