Description
The woff_open_font function in sfnt/sfobjs.c in FreeType before 2.5.4 proceeds with offset+length calculations without restricting length values, which allows remote attackers to cause a denial of service (integer overflow and heap-based buffer overflow) or possibly have unspecified other impact via a crafted Web Open Font Format (WOFF) 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 | freetype | 2.5.2-3 | — |
| Debian 13 | freetype | 2.5.2-3 | — |
| Debian 12 | freetype | 2.5.2-3 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | freetype | 2.5.2-1ubuntu2.4 | USN-2510-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | ft2demos +1 | 2.5.3-5.1 | SUSE-SU-2015:0455-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | ft2demos +1 | 2.5.3-5.1 | SUSE-SU-2015:0455-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | ft2demos +1 | 2.7-1.1 | openSUSE-SU-2024:10438-1, openSUSE-SU-2024:10172-1 |
Advisories 4
- USN-2510-1 freetype vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10438-1 freetype2-devel-2.7-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10172-1 ft2demos-2.7-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:0455-1 Security update for freetype2 SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://code.google.com/p/google-security-research/issues/detail?id=164
- GLSA-201503-05 vendor-advisory
- 72986 vdb-entry
- USN-2739-1 vendor-advisory
- openSUSE-SU-2015:0627 vendor-advisory
- FEDORA-2015-2216 vendor-advisory
- USN-2510-1 vendor-advisory
- http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=f46add13895337ece929b18bb8f036431b3fb538
- FEDORA-2015-2237 vendor-advisory