CVE-2020-29385

GNOME gdk-pixbuf (aka GdkPixbuf) before 2.42.2 allows a denial of service
(infinite loop) in lzw.c in the function write_indexes. if c->self_code
equals 10, self->code_table[10].extends will assign the value 11 to c. The
next execution in the loop will assign self->code_table[11].extends to c,
which will give the value of 10. This will make the loop run infinitely.
This bug can, for example, be triggered by calling this function with a GIF
image with LZW compression that is crafted in a special way.

Bugs

• <https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/164&gt;

Notes