Description
Gnome Fonts Viewer 3.34.0 contains a heap corruption vulnerability that allows attackers to trigger an out-of-bounds write by crafting a malicious TTF font file. Attackers can generate a specially crafted TTF file with an oversized pattern to exhaust memory through repeated malloc() calls and potentially crash the gnome-font-viewer process.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GNOME | Fonts Viewer | 3.34.0 | — |
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 | gnome-font-viewer | No fix yet | — |
| Ubuntu 26.04 LTS | gnome-font-viewer | No fix yet | — |
| Ubuntu 25.10 | gnome-font-viewer | No fix yet | — |
| Ubuntu 24.04 LTS | gnome-font-viewer | No fix yet | — |
| Ubuntu 22.04 LTS | gnome-font-viewer | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | gnome-font-viewer | No fix yet | — |
| Ubuntu 18.04 LTS | gnome-font-viewer | No fix yet | — |
| Ubuntu 16.04 LTS | gnome-font-viewer | No fix yet | — |
References
- ExploitDB-48803 exploit
- Gnome Official Website product
- Gnome Font Viewer App Webpage product
- VulnCheck Advisory: Gnome Fonts Viewer 3.34.0 Heap Corruption third-party-advisory