Description
An out-of-bounds write flaw was found in FontForge in versions before 20200314 while parsing SFD files containing certain LayerCount tokens. This flaw allows an attacker to manipulate the memory allocated on the heap, causing the application to crash or execute arbitrary code. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | fontforge | fontforge before 20200314 | — |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | fontforge | No fix yet | — |
| Ubuntu 26.04 LTS | fontforge | No fix yet | — |
| Ubuntu 25.10 | fontforge | No fix yet | — |
| Ubuntu 24.04 LTS | fontforge | No fix yet | — |
| Ubuntu 22.04 LTS | fontforge | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | fontforge | No fix yet | — |
| Ubuntu Pro 18.04 LTS | fontforge | No fix yet | — |
| Ubuntu Pro 16.04 LTS | fontforge | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | fontforge | 20170731-15.el8 | RHSA-2020:4844 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | fontforge | 20170731-15.el8 | ALSA-2020:4844 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | fontforge | 20170731-11.14.1 | SUSE-SU-2020:3628-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | fontforge | 20170731-lp151.4.6.1 | openSUSE-SU-2020:2111-1 |
Advisories 4
- ALSA-2020:4844 Moderate: fontforge security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2020:4844 Red Hat Security Advisory: fontforge security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- openSUSE-SU-2020:2111-1 Security update for fontforge SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3628-1 Security update for fontforge SUSE / openSUSE Security Updates · Feb 4, 2026