Description
Heap-based buffer overflow in the resize_context_buffers function in libvpx in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 allows remote attackers to execute arbitrary code via malformed WebM video data.
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 | libvpx | 1.4.0-1 | — |
| Debian 13 | libvpx | 1.4.0-1 | — |
| Debian 12 | libvpx | 1.4.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 40.0+build4-0ubuntu0.14.04.1 | USN-2702-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 38.2.0-4.el7_1 | RHSA-2015:1586 |
| RHEL 6 | firefox | 38.2.0-4.el6_7 | RHSA-2015:1586 |
| RHEL 5 | firefox | 38.2.0-4.el5_11 | RHSA-2015:1586 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | MozillaFirefox | 38.2.1esr-45.1 | SUSE-SU-2015:1476-1 |
| SLES 12 | MozillaFirefox-branding-SLE | 31.0-14.1 | SUSE-SU-2015:1476-1 |
| SLES 12 | mozilla-nss | 3.19.2.0-26.2 | SUSE-SU-2015:1476-1 |
| SLES 11 SP4 | MozillaFirefox | 38.2.1esr-19.3 | SUSE-SU-2015:1528-1 |
| SLES 11 SP4 | MozillaFirefox-branding-SLED | 31.0-0.12.51 | SUSE-SU-2015:1528-1 |
| SLES 11 SP4 | mozilla-nss | 3.19.2.0-0.16.1 | SUSE-SU-2015:1528-1 |
| SLES 11 SP3 | MozillaFirefox | 38.2.1esr-19.3 | SUSE-SU-2015:1528-1 |
| SLES 11 SP3 | MozillaFirefox-branding-SLED | 31.0-0.12.51 | SUSE-SU-2015:1528-1 |
| SLES 11 SP3 | mozilla-nss | 3.19.2.0-0.16.1 | SUSE-SU-2015:1528-1 |
| SLES 11 SP2 | MozillaFirefox | 38.2.0esr-10.1 | SUSE-SU-2015:1449-1 |
| SLES 11 SP2 | MozillaFirefox-branding-SLED | 31.0-0.5.7.11 | SUSE-SU-2015:1449-1 |
| SLES 11 SP2 | firefox-gcc47 | 4.7.2_20130108-0.37.2 | SUSE-SU-2015:1449-1 |
| SLES 11 SP2 | mozilla-nss | 3.19.2.0-0.7.1 | SUSE-SU-2015:1449-1 |
| SLES 11 SP1 | MozillaFirefox | 38.2.0esr-10.1 | SUSE-SU-2015:1449-1 |
| SLES 11 SP1 | MozillaFirefox-branding-SLED | 31.0-0.5.7.11 | SUSE-SU-2015:1449-1 |
| SLES 11 SP1 | firefox-gcc47 | 4.7.2_20130108-0.37.2 | SUSE-SU-2015:1449-1 |
| SLES 11 SP1 | mozilla-nss | 3.19.2.0-0.7.1 | SUSE-SU-2015:1449-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | MozillaFirefox | 38.2.1esr-45.1 | SUSE-SU-2015:1476-1 |
| SLES for SAP 12 | MozillaFirefox-branding-SLE | 31.0-14.1 | SUSE-SU-2015:1476-1 |
| SLES for SAP 12 | mozilla-nss | 3.19.2.0-26.2 | SUSE-SU-2015:1476-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 38.2.1esr-19.3 | SUSE-SU-2015:1528-1 |
| SLES for SAP 11 SP4 | MozillaFirefox-branding-SLED | 31.0-0.12.51 | SUSE-SU-2015:1528-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.19.2.0-0.16.1 | SUSE-SU-2015:1528-1 |
| SLES for SAP 11 SP3 | MozillaFirefox | 38.2.1esr-19.3 | SUSE-SU-2015:1528-1 |
| SLES for SAP 11 SP3 | MozillaFirefox-branding-SLED | 31.0-0.12.51 | SUSE-SU-2015:1528-1 |
| SLES for SAP 11 SP3 | mozilla-nss | 3.19.2.0-0.16.1 | SUSE-SU-2015:1528-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 45.5.1-1.1 | openSUSE-SU-2024:10230-1 |
| 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 | 38.2.0-4.0.1.el7_1 | ELSA-2015-1586 |
Advisories 9
- RHSA-2015:1586 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-2702-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1476-1 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1449-1 Security update for MozillaFirefox, mozilla-nss 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
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2015:1528-1 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2015-1586 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 11, 2015
References
- SUSE-SU-2015:2081 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1177948
- openSUSE-SU-2015:1454 vendor-advisory
- USN-2702-3 vendor-advisory
- openSUSE-SU-2015:1389 vendor-advisory
- openSUSE-SU-2015:1453 vendor-advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-89.html
- RHSA-2015:1586 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- SUSE-SU-2015:1528 vendor-advisory
- 1033247 vdb-entry
- USN-2702-2 vendor-advisory
- USN-2702-1 vendor-advisory
- GLSA-201605-06 vendor-advisory
- SUSE-SU-2015:1449 vendor-advisory
- openSUSE-SU-2015:1390 vendor-advisory