Description
Sandbox escape due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | — | 140.16 |
| Mozilla | Thunderbird | — | 140.16 |
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 | 140.16.0esr-1 | — |
| Debian 14 | thunderbird | 1:153.3.0esr-1 | — |
| Debian 13 | firefox-esr | 140.16.0esr-1~deb13u1 | — |
| Debian 13 | thunderbird | 1:140.16.0esr-1~deb13u1 | — |
| Debian 12 | firefox-esr | 140.16.0esr-1~deb12u1 | — |
| Debian 12 | thunderbird | 1:140.16.0esr-1~deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | mozjs102 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | mozjs78 +3 | No fix yet | — |
| 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 +1 | 140.16.0-1.el10_2 | RHSA-2026:73130, RHSA-2026:69461 |
| RHEL 9 | firefox +2 | 140.16.0-1.el9_8 | RHSA-2026:70642, RHSA-2026:69462 |
| RHEL 8 | firefox +1 | 140.16.0-1.el8_10 | RHSA-2026:73971, RHSA-2026:71652 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | firefox +1 | 140.16.0-1.el10_0 | RHSA-2026:82818, RHSA-2026:81392 |
| RHEL 9.6 EUS | firefox +2 | 140.16.0-1.el9_6 | RHSA-2026:82817, RHSA-2026:81884 |
| RHEL 9.4 E4S | firefox +2 | 140.16.0-1.el9_4 | RHSA-2026:83077, RHSA-2026:81393 |
| RHEL 9.2 E4S | firefox +2 | 140.16.0-1.el9_2 | RHSA-2026:82780, RHSA-2026:81394 |
| RHEL 8.8 TUS | firefox +1 | 140.16.0-1.el8_8 | RHSA-2026:82720, RHSA-2026:81912 |
| RHEL 8.8 E4S | firefox +1 | 140.16.0-1.el8_8 | RHSA-2026:82720, RHSA-2026:81912 |
| RHEL 8.6 EUS Long Life | firefox +1 | 140.16.0-1.el8_6 | RHSA-2026:83076, RHSA-2026:81913 |
| RHEL 8.6 AUS | firefox +1 | 140.16.0-1.el8_6 | RHSA-2026:83076, RHSA-2026:81913 |
| RHEL 8.4 EUS Long Life | firefox +1 | 140.16.0-1.el8_4 | RHSA-2026:82779, RHSA-2026:82122 |
| RHEL 8.4 AUS | firefox +1 | 140.16.0-1.el8_4 | RHSA-2026:82779, RHSA-2026:82122 |
| RHEL 7 ELS | firefox | 140.16.0-1.el7_9 | RHSA-2026:83496 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | firefox | 140.16.0-1.el10_2 | ALSA-2026:69461 |
| AlmaLinux 10 | thunderbird | 140.16.0-1.el10_2.alma.1 | ALSA-2026:73130 |
| AlmaLinux 9 | firefox +2 | 140.16.0-1.el9_8.alma.1 | ALSA-2026:70642, ALSA-2026:69462 |
| AlmaLinux 8 | firefox +1 | 140.16.0-1.el8_10.alma.1 | ALSA-2026:73971, ALSA-2026:71652 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | firefox +1 | 140.16.0-1.el10_2 | RLSA-2026:73130, RLSA-2026:69461 |
| Rocky Linux 9 | firefox +1 | 140.16.0-1.el9_8 | RLSA-2026:70642, RLSA-2026:69462 |
| Rocky Linux 8 | firefox +1 | 140.16.0-1.el8_10 | RLSA-2026:73971, RLSA-2026:71652 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
| SLES 15 SP7 | MozillaThunderbird | 153.4.0-150400.13.6.1 | SUSE-SU-2026:4627-1 |
| SLES 15 SP6 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
| SLES 15 SP5 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
| SLES 15 SP4 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
| SLES 12 SP5 | MozillaFirefox | 153.3.0-118.8.1 | SUSE-SU-2026:4247-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | MozillaFirefox | 153.3.0-160000.1.1 | SUSE-SU-2026:23918-1 |
| SLES for SAP 15 SP6 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
| SLES for SAP 15 SP5 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
| SLES for SAP 15 SP4 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
| SLES 16.0 | MozillaFirefox | 153.3.0-160000.1.1 | SUSE-SU-2026:23918-1 |
| SLE HPC 15 SP5 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
| SLE HPC 15 SP4 | MozillaFirefox | 153.3.0-150400.157.8.1 | SUSE-SU-2026:4264-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 156.0-1.1 | openSUSE-SU-2026:11826-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 140.16.0-1.1 | openSUSE-SU-2026:11827-1 |
| openSUSE Tumbleweed | firefox-esr | 153.3.0-1.1 | openSUSE-SU-2026:11796-1 |
| openSUSE Leap 16.0 | MozillaFirefox | 153.3.0-160000.1.1 | openSUSE-SU-2026:21951-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | firefox | 140.17.0-1.amzn2023.0.1 | ALAS2023-2026-3214 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | firefox +1 | 140.16.0-1.0.1.el10_2 | ELSA-2026-73130, ELSA-2026-69461 |
| Oracle Linux 9 | firefox +2 | 140.16.0-1.0.1.el9_8 | ELSA-2026-70642, ELSA-2026-69462 |
| Oracle Linux 8 | firefox +1 | 140.16.0-1.0.1.el8_10 | ELSA-2026-73971, ELSA-2026-71652 |
| Oracle Linux 7 | firefox | 140.16.0-1.0.1.el7_9 | ELSA-2026-83496 |
Advisories 50
- WID-SEC-2026-3375 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026
- ELSA-2026-83496 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 6, 2026
- ALAS2023-2026-3214 Important: firefox security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 29, 2026
- ALSA-2026:69462 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:73130 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:69461 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:70642 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:71652 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:73971 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:83496 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:83076 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:83077 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:82818 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:82817 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:82780 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:82779 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:82720 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:82122 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:81912 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:81913 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:81884 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:81394 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:81393 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:81392 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:73971 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:73130 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:71652 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:70642 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:69461 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:69462 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- SUSE-SU-2026:4627-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Oct 13, 2026
- RLSA-2026:73971 Important: thunderbird security update Rocky Linux Security Advisories · Oct 1, 2026
- ELSA-2026-73971 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 1, 2026
- SUSE-SU-2026:23918-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Sep 30, 2026
- RLSA-2026:73130 Important: thunderbird security update Rocky Linux Security Advisories · Sep 30, 2026
- ELSA-2026-71652 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 29, 2026
- ELSA-2026-73130 Important: thunderbird security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Sep 29, 2026
- RLSA-2026:71652 Important: firefox security update Rocky Linux Security Advisories · Sep 26, 2026
- openSUSE-SU-2026:21951-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Sep 25, 2026
- RLSA-2026:70642 Important: thunderbird security update Rocky Linux Security Advisories · Sep 25, 2026
- ELSA-2026-70642 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 24, 2026
- RLSA-2026:69462 Important: firefox security update Rocky Linux Security Advisories · Sep 23, 2026
- openSUSE-SU-2026:11826-1 MozillaFirefox-156.0-1.1 on GA media SUSE / openSUSE Security Updates · Sep 22, 2026
- openSUSE-SU-2026:11827-1 MozillaThunderbird-140.16.0-1.1 on GA media SUSE / openSUSE Security Updates · Sep 22, 2026
- RLSA-2026:69461 Important: firefox security update Rocky Linux Security Advisories · Sep 22, 2026
- ELSA-2026-69461 Important: firefox security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Sep 22, 2026
- ELSA-2026-69462 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 22, 2026
- SUSE-SU-2026:4264-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Sep 19, 2026
- SUSE-SU-2026:4247-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Sep 18, 2026
- openSUSE-SU-2026:11796-1 firefox-esr-153.3.0-1.1 on GA media SUSE / openSUSE Security Updates · Sep 17, 2026
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2068437
- https://www.mozilla.org/security/advisories/mfsa2026-90/
- https://www.mozilla.org/security/advisories/mfsa2026-92/
- https://www.mozilla.org/security/advisories/mfsa2026-93/
- https://www.mozilla.org/security/advisories/mfsa2026-94/
- https://www.mozilla.org/security/advisories/mfsa2026-95/
- https://www.mozilla.org/security/advisories/mfsa2026-96/