giflib security update

5.2.1-22.1 - fix CVE-2026-23868: double free in GifMakeSavedImage RHEL-154849...

Astra Linux – Vulnerability in gdk-pixbuf

A flaw was discovered in the GIF parser of GdkPixbuf’s LZW decoder. When an invalid symbol is encountered during decompression, the decoder sets the reported output size to the full buffer length instead of the actual number of bytes written. This logical error causes uninitialized sections of th...

UBUNTU-CVE-2021-20240

A flaw was found in gdk-pixbuf in versions before 2.42.0. An integer wraparound leading to an out of bounds write can occur when a crafted GIF image is loaded. An attacker may cause applications to crash or could potentially execute code on the victim system. The highest threat from this...