A flaw was found 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 rather than the actual number of written bytes. This logic error results in uninitialized sections of the buffer being included in the output, potentially leaking arbitrary memory contents in the processed image.

A flaw was found 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 rather than the actual number of written bytes. This logic error results in uninitialized sections of the buffer being included in the output, potentially leaking arbitrary memory contents in the processed image.

Affected: openEuler:20.03-LTS-SP4: gdk-pixbuf2, openEuler:22.03-LTS-SP3: gdk-pixbuf2, openEuler:22.03-LTS-SP4: gdk-pixbuf2, openEuler:24.03-LTS: gdk-pixbuf2, openEuler:24.03-LTS-SP1: gdk-pixbuf2, openEuler:24.03-LTS-SP2: gdk-pixbuf2

gdk is written in C but has been designed from the ground up to support a wide range of languages. It provide a complete set of widgets,and suitable for projects ranging from small one-off tools to complete application suites. Security Fix(es):

A flaw was found 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 rather than the actual number of written bytes. This logic error results in uninitialized sections of the buffer being included in the output, potentially leaking arbitrary memory contents in the processed image.(CVE-2025-6199)

gdk-pixbuf-devel-2.42.12-4.1 on GA media

Security update for gdk-pixbuf

Affected: Ubuntu:Pro:16.04:LTS: gdk-pixbuf, Ubuntu:Pro:18.04:LTS: gdk-pixbuf, Ubuntu:Pro:20.04:LTS: gdk-pixbuf, Ubuntu:22.04:LTS: gdk-pixbuf, Ubuntu:24.04:LTS: gdk-pixbuf, Ubuntu:25.10: gdk-pixbuf

A flaw was found 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 rather than the actual number of written bytes. This logic error results in uninitialized sections of the buffer being included in the output, potentially leaking arbitrary memory contents in the processed image.

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in gdk-pixbuf ausnutzen, um Informationen offenzulegen.