Description
The update_dimensions function in libavcodec/vp8.c in FFmpeg through 2.8.1, as used in Google Chrome before 46.0.2490.71 and other products, relies on a coefficient-partition count during multi-threaded operation, which allows remote attackers to cause a denial of service (race condition and memory corruption) or possibly have unspecified other impact via a crafted WebM file.
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 | ffmpeg | 7:2.8.1-1 | — |
| Debian 13 | ffmpeg | 7:2.8.1-1 | — |
| Debian 12 | ffmpeg | 7:2.8.1-1 | — |
| Debian 8 | chromium-browser | 46.0.2490.71-1~deb8u1 | DSA-3376-1 |
| Debian 8 | libav | 6:11.12-1~deb8u2 | DLA-1611-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | chromium-browser | 47.0.2526.73-0ubuntu1.1218 | — |
| Ubuntu 16.04 LTS | oxide-qt | 1.10.3-0ubuntu0.15.10.1 | — |
| Ubuntu 14.04 LTS | chromium-browser | 47.0.2526.73-0ubuntu0.14.04.1.1106 | — |
| Ubuntu 14.04 LTS | oxide-qt | 1.10.3-0ubuntu0.14.04.1 | USN-2770-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | libav | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | chromium-browser | 46.0.2490.71-1.el6 | RHSA-2015:1912 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | chromium | 55.0.2883.75-3.1 | openSUSE-SU-2024:12948-1, openSUSE-SU-2024:10171-1 |
Advisories 6
- RHSA-2015:1912 Red Hat Security Advisory: chromium-browser security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-3376-1 chromium-browser - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1611-1 libav - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2770-1 oxide-qt vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:10171-1 chromedriver-55.0.2883.75-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12948-1 ungoogled-chromium-113.0.5672.92-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://googlechromereleases.blogspot.com/2015/10/stable-channel-update.html
- [debian-lts-announce] 20181220 [SECURITY] [DLA 1611-1] libav security update mailing-list
- https://codereview.chromium.org/1376913003
- DSA-3376 vendor-advisory
- https://code.google.com/p/chromium/issues/detail?id=532967
- https://code.google.com/p/chromium/issues/detail?id=447860
- 77073 vdb-entry
- GLSA-201603-09 vendor-advisory
- 1033816 vdb-entry
- USN-2770-1 vendor-advisory
- RHSA-2015:1912 vendor-advisory
- USN-2770-2 vendor-advisory
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=dabea74d0e82ea80cd344f630497cafcb3ef872c