CVE-2021-46829: GNOME GdkPixbuf (aka GDK-PixBuf) before 2.42.8 allows a heap-based buffer overflow when compositing or clea...

Security readout for executives and security teams

GdkPixbuf, a widely used GNOME image-loading library, had a heap buffer overflow when handling GIF animation frames before version 2.42.8. A malicious GIF processed by affected software could crash the program or potentially lead to code execution, with the source bundle noting higher concern on 32-bit systems. Exposure is likely on Linux desktop, server, or application environments using GdkPixbuf versions earlier than 2.42.8 to parse GIF files. Risk depends on whether untrusted GIFs are opened, previewed, indexed, transformed, or otherwise processed by software linked to GdkPixbuf. Treat this as a patching priority where untrusted images are processed. The business risk is highest for systems that preview uploaded files, handle email or chat images, or run older 32-bit environments. No active exploitation is proven by the supplied sources. Mitigation focus: Upgrade GdkPixbuf to version 2.42.8 or later.; Apply fixed distribution packages from Debian, Fedora, or your OS vendor.; Reduce processing of untrusted GIF files until affected systems are patched..

Prepared

Jun 2, 2026, 02:45 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.