Description
Memory corruption resulting in a potentially exploitable crash during garbage collection of JavaScript due errors in how incremental sweeping is managed for memory cleanup. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 52 | 52 |
| Mozilla | Firefox ESR | unspecified – < 45.8 | 45.8 |
| Mozilla | Thunderbird | unspecified – < 52, unspecified – < 45.8 | 52 |
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 | 45.8.0esr-1 | — |
| Debian 13 | firefox-esr | 45.8.0esr-1 | — |
| Debian 12 | firefox-esr | 45.8.0esr-1 | — |
| Debian 8 | firefox-esr | 45.8.0esr-1~deb8u1 | DSA-3805-1 |
| Debian 8 | icedove | 1:45.8.0-3~deb8u1 | DSA-3832-1 |
| Debian 7 | firefox-esr | 45.8.0esr-1~deb7u1 | DLA-852-1 |
| Debian 7 | icedove | 1:45.8.0-3~deb7u1 | DLA-896-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | firefox | 52.0+build2-0ubuntu0.16.04.1 | USN-3216-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:45.8.0+build1-0ubuntu0.16.04.1 | USN-3233-1 |
| Ubuntu 14.04 LTS | firefox | 52.0+build2-0ubuntu0.14.04.1 | USN-3216-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:45.8.0+build1-0ubuntu0.14.04.1 | USN-3233-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 52.0-4.el7_3 | RHSA-2017:0461 |
| RHEL 7 | thunderbird | 45.8.0-1.el7_3 | RHSA-2017:0498 |
| RHEL 6 | firefox | 45.8.0-2.el6_8 | RHSA-2017:0459 |
| RHEL 6 | thunderbird | 45.8.0-1.el6_8 | RHSA-2017:0498 |
| RHEL 5 | firefox | 45.8.0-2.el5_11 | RHSA-2017:0459 |
| RHEL 5 | thunderbird | 45.8.0-1.el5_11 | RHSA-2017:0498 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 45.8.0-1.el5_11 | RHSA-2017:0498 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | MozillaFirefox | 45.8.0esr-102.1 | SUSE-SU-2017:0714-1 |
| SLES 12 SP1 | MozillaFirefox | 45.8.0esr-102.1 | SUSE-SU-2017:0714-1 |
| SLES 12 | MozillaFirefox | 45.8.0esr-102.1 | SUSE-SU-2017:0714-1 |
| SLES 11 SP4 | MozillaFirefox | 45.8.0esr-68.1 | SUSE-SU-2017:0732-1 |
| SLES 11 SP3 | MozillaFirefox | 45.8.0esr-68.1 | SUSE-SU-2017:0732-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | MozillaFirefox | 45.8.0esr-102.1 | SUSE-SU-2017:0714-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 45.8.0esr-102.1 | SUSE-SU-2017:0714-1 |
| SLES for SAP 12 | MozillaFirefox | 45.8.0esr-102.1 | SUSE-SU-2017:0714-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 45.8.0esr-68.1 | SUSE-SU-2017:0732-1 |
| SUSE Package Hub 12 | MozillaThunderbird | 45.8.0-27.1 | openSUSE-SU-2017:1268-1, openSUSE-SU-2017:0688-1, openSUSE-SU-2017:0687-1 |
| SUSE OpenStack Cloud 5 | MozillaFirefox | 45.8.0esr-68.1 | SUSE-SU-2017:0732-1 |
| SUSE Manager Proxy 2.1 | MozillaFirefox | 45.8.0esr-68.1 | SUSE-SU-2017:0732-1 |
| SUSE Manager 2.1 | MozillaFirefox | 45.8.0esr-68.1 | SUSE-SU-2017:0732-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | MozillaFirefox | 45.8.0esr-68.1 | SUSE-SU-2017:0732-1 |
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 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | firefox | 52.0-4.0.1.el7_3 | ELSA-2017-0461 |
| Oracle Linux 7 | thunderbird | 45.8.0-1.0.1.el7_3 | ELSA-2017-0498 |
Advisories 19
- RHSA-2017:0498 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2017:0461 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2017:0459 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3233-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3216-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-852-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-896-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3832-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3805-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2017:0688-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2017:0687-1 Security update for MozillaThunderbird 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-2017:0714-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2017:1268-1 Security update for MozillaThunderbird 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-2017:0732-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10601-1 MozillaThunderbird-91.1.1-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2017-0498 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 14, 2017
- ELSA-2017-0461 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 8, 2017
References
- 96693 vdb-entry
- RHSA-2017:0459 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2017-09/
- DSA-3832 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2017-07/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1330687
- https://www.mozilla.org/security/advisories/mfsa2017-05/
- 1037966 vdb-entry
- GLSA-201705-06 vendor-advisory
- RHSA-2017:0461 vendor-advisory
- DSA-3805 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2017-06/
- RHSA-2017:0498 vendor-advisory
- GLSA-201705-07 vendor-advisory