Description
Mozilla developers and community members reported memory safety bugs present in Firefox 68, Firefox ESR 68, and Firefox 60.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 69 | 69 |
| Mozilla | Thunderbird | unspecified – < 68.1, unspecified – < 60.9 | 68.1 |
| Mozilla | Firefox ESR | unspecified – < 60.9, unspecified – < 68.1 | 60.9 |
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 | 68.1.0esr-1 | — |
| Debian 14 | thunderbird | 1:60.9.0-1 | — |
| Debian 13 | firefox-esr | 68.1.0esr-1 | — |
| Debian 13 | thunderbird | 1:60.9.0-1 | — |
| Debian 12 | firefox-esr | 68.1.0esr-1 | — |
| Debian 12 | thunderbird | 1:60.9.0-1 | — |
| Debian 10 | firefox-esr | 60.9.0esr-1~deb10u1 | DSA-4516-1 |
| Debian 10 | thunderbird | 1:60.9.0-1~deb10u1 | DSA-4523-1 |
| Debian 9 | firefox-esr | 60.9.0esr-1~deb9u1 | DSA-4516-1 |
| Debian 9 | thunderbird | 1:60.9.0-1~deb9u1 | DSA-4523-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | firefox-esr | 60.9.0esr-1~deb8u1 | DLA-1910-1 |
| Debian 8 | thunderbird | 1:60.9.0-1~deb8u1 | DLA-1926-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mozjs52 | No fix yet | — |
| Ubuntu 18.04 LTS | firefox | 69.0+build2-0ubuntu0.18.04.1 | USN-4122-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:60.9.0+build1-0ubuntu0.18.04.1 | USN-4150-1 |
| Ubuntu 16.04 LTS | firefox | 69.0+build2-0ubuntu0.16.04.4 | USN-4122-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:60.9.0+build1-0ubuntu0.16.04.2 | USN-4150-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | firefox | 68.1.0-1.el8_0 | RHSA-2019:2663 |
| RHEL 8 | thunderbird | 60.9.0-2.el8_0 | RHSA-2019:2774 |
| RHEL 7 | firefox +1 | 60.9.0-1.el7_7 | RHSA-2019:2773, RHSA-2019:2729 |
| RHEL 6 | firefox +1 | 60.9.0-1.el6_10 | RHSA-2019:2807, RHSA-2019:2694 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | MozillaFirefox | 68.1.0-3.54.2 | SUSE-SU-2019:2545-1 |
| SLES 15 SP1 | MozillaFirefox-branding-SLE | 68-4.8.5 | SUSE-SU-2019:2545-1 |
| SLES 15 SP1 | MozillaThunderbird | 68.1.1-3.51.1 | SUSE-SU-2019:2515-1 |
| SLES 15 | MozillaFirefox | 68.1.0-3.54.2 | SUSE-SU-2019:2545-1 |
| SLES 15 | MozillaFirefox-branding-SLE | 68-4.8.5 | SUSE-SU-2019:2545-1 |
| SLES 15 | MozillaThunderbird | 68.1.1-3.51.1 | SUSE-SU-2019:2515-1 |
| SLES 12 SP5 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES 12 SP5 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SLES 12 SP4 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES 12 SP4 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SLES 12 SP3 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES 12 SP3 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES 12 SP2 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SLES 12 SP1 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES 12 SP1 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SLES 11 SP4 | MozillaFirefox | 60.9.0esr-78.46.2 | SUSE-SU-2019:14246-1, SUSE-SU-2019:14173-1 |
| SLES 11 SP4 | MozillaFirefox-branding-SLED | 68-21.9.8 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | firefox-atk | 2.26.1-2.8.4 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | firefox-cairo | 1.15.10-2.13.4 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | firefox-gdk-pixbuf | 2.36.11-2.8.4 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | firefox-glib2 | 2.54.3-2.11.1 | SUSE-SU-2019:14246-1, SUSE-SU-2019:14173-1 |
| SLES 11 SP4 | firefox-gtk3 | 3.10.9-2.12.2 | SUSE-SU-2019:14246-1, SUSE-SU-2019:14173-1 |
| SLES 11 SP4 | firefox-harfbuzz | 1.7.5-2.7.4 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | firefox-libffi | 3.2.1.git259-2.3.3 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | firefox-libffi-gcc5 | 5.3.1+r233831-14.1 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | firefox-pango | 1.40.14-2.7.4 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | mozilla-nspr | 4.21-29.6.1 | SUSE-SU-2019:14246-1 |
| SLES 11 SP4 | mozilla-nss | 3.45-38.9.3 | SUSE-SU-2019:14246-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES for SAP 12 SP5 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES for SAP 12 SP4 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES for SAP 12 SP3 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES for SAP 12 SP2 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SLES for SAP 12 SP1 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SUSE OpenStack Cloud Crowbar 8 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SUSE OpenStack Cloud Crowbar 8 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SUSE OpenStack Cloud 8 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SUSE OpenStack Cloud 8 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SUSE OpenStack Cloud 7 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SUSE OpenStack Cloud 7 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SUSE HPE Helion OpenStack 8 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SUSE HPE Helion OpenStack 8 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SUSE Enterprise Storage 5 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SUSE Enterprise Storage 5 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
| SUSE Enterprise Storage 4 | MozillaFirefox | 60.9.0-109.86.1 | SUSE-SU-2019:2620-1, SUSE-SU-2019:2436-1 |
| SUSE Enterprise Storage 4 | MozillaFirefox-branding-SLE | 68-32.8.1 | SUSE-SU-2019:2620-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 92.0-1.2 | openSUSE-SU-2024:10600-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 91.1.1-1.1 | openSUSE-SU-2024:10601-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.1 | MozillaFirefox | 68.1.0-lp151.2.14.1 | openSUSE-SU-2019:2251-1 |
| openSUSE Leap 15.1 | MozillaThunderbird | 68.1.1-lp151.2.13.1 | openSUSE-SU-2019:2249-1 |
| openSUSE Leap 15.1 | enigmail | 2.1.2-lp151.2.6.1 | openSUSE-SU-2019:2249-1 |
| openSUSE Leap 15.0 | MozillaFirefox | 68.1.0-lp150.3.66.1 | openSUSE-SU-2019:2260-1 |
| openSUSE Leap 15.0 | MozillaThunderbird | 68.1.1-lp150.3.51.1 | openSUSE-SU-2019:2248-1 |
| openSUSE Leap 15.0 | enigmail | 2.1.2-lp150.34.1 | openSUSE-SU-2019:2248-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.22 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.21 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.20 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.19 | firefox-esr | 68.1.0-r0 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.17 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.16 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.15 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.14 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.13 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.12 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.11 | firefox-esr | 68.1.0-r0 | — |
| Alpine v3.10 | firefox-esr | 69.9.0-r0 | — |
| Alpine v3.9 | firefox-esr | 69.9.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 60.9.0-1.amzn2.0.1 | ALAS2-2019-1304 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | firefox | 68.1.0-1.0.1.el8_0 | ELSA-2019-2663 |
| Oracle Linux 8 | thunderbird | 60.9.0-2.0.1.el8_0 | ELSA-2019-2774 |
| Oracle Linux 7 | firefox +1 | 60.9.0-1.0.1.el7_7 | ELSA-2019-2773, ELSA-2019-2729 |
Advisories 30
- RHSA-2019:2729 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2019:2694 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2019:2663 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2019:2807 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2019:2773 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-4150-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-4122-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4516-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4523-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1926-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1910-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2019:2249-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2436-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2248-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2260-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2251-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10600-1 MozillaFirefox-92.0-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:14173-1 Security update for MozillaFirefox, firefox-glib2, firefox-gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2545-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2620-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:14246-1 Security update for Mozilla Firefox 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-2019:2515-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2019:2774 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jan 14, 2026
- openSUSE-SU-2024:10601-1 MozillaThunderbird-91.1.1-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ALAS2-2019-1304 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 2, 2019
- ELSA-2019-2774 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 17, 2019
- ELSA-2019-2773 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 16, 2019
- ELSA-2019-2729 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 11, 2019
- ELSA-2019-2663 Critical: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 6, 2019
References
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1563133%2C1573160
- https://www.mozilla.org/security/advisories/mfsa2019-25/
- https://www.mozilla.org/security/advisories/mfsa2019-27/
- https://www.mozilla.org/security/advisories/mfsa2019-26/
- https://www.mozilla.org/security/advisories/mfsa2019-29/
- https://www.mozilla.org/security/advisories/mfsa2019-30/
- openSUSE-SU-2019:2248 vendor-advisory
- openSUSE-SU-2019:2249 vendor-advisory
- openSUSE-SU-2019:2251 vendor-advisory
- openSUSE-SU-2019:2260 vendor-advisory
- USN-4150-1 vendor-advisory
- GLSA-201911-07 vendor-advisory