Description
A use-after-free vulnerability can occur in the compositor during certain graphics operations when a raw pointer is used instead of a reference counted one. This results in a potentially exploitable crash. This vulnerability affects Firefox ESR < 52.7.3 and Firefox < 59.0.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox ESR | unspecified – < 52.7.3 | 52.7.3 |
| Mozilla | Firefox | unspecified – < 59.0.2 | 59.0.2 |
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 | 52.7.3esr-1 | — |
| Debian 13 | firefox-esr | 52.7.3esr-1 | — |
| Debian 12 | firefox-esr | 52.7.3esr-1 | — |
| Debian 9 | firefox-esr | 52.7.3esr-1~deb9u1 | DSA-4153-1 |
| Debian 8 | firefox-esr | 52.7.3esr-1~deb8u1 | DSA-4153-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | firefox-esr | 52.7.3esr-1~deb7u1 | DLA-1321-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | firefox | 59.0.2+build1-0ubuntu1 | — |
| Ubuntu 16.04 LTS | firefox | 59.0.2+build1-0ubuntu0.16.04.1 | USN-3609-1 |
| Ubuntu 14.04 LTS | firefox | 59.0.2+build1-0ubuntu0.14.04.1 | USN-3609-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 52.7.3-1.el7_5 | RHSA-2018:1099 |
| RHEL 6 | firefox | 52.7.3-1.el6_9 | RHSA-2018:1098 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | MozillaFirefox | 52.7.3esr-109.25.1 | SUSE-SU-2018:0850-1 |
| SLES 12 SP2 | MozillaFirefox | 52.7.3esr-109.25.1 | SUSE-SU-2018:0850-1 |
| SLES 11 SP4 | MozillaFirefox | 52.7.3esr-72.27.2 | SUSE-SU-2018:0907-1 |
| SLES 11 SP3 | MozillaFirefox | 52.7.3esr-72.27.2 | SUSE-SU-2018:0907-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | MozillaFirefox | 52.7.3esr-109.25.1 | SUSE-SU-2018:0850-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 52.7.3esr-109.25.1 | SUSE-SU-2018:0850-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 52.7.3esr-72.27.2 | SUSE-SU-2018:0907-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | MozillaFirefox | 52.7.3esr-72.27.2 | SUSE-SU-2018:0907-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 92.0-1.2 | openSUSE-SU-2024:10600-1 |
| 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 | 52.7.3-1.0.1.el7_5 | ELSA-2018-1099 |
Advisories 10
- RHSA-2018:1099 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2018:1098 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3609-1 firefox vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4153-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1321-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10600-1 MozillaFirefox-92.0-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0907-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0850-1 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
- ELSA-2018-1099 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 17, 2018
References
- RHSA-2018:1098 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1440717
- USN-3609-1 vendor-advisory
- DSA-4153 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2018-10/
- 1040574 vdb-entry
- [debian-lts-announce] 20180327 [SECURITY] [DLA 1321-1] firefox-esr security update mailing-list
- 103506 vdb-entry
- RHSA-2018:1099 vendor-advisory