Description
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.
References (8)
Core 8
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/blob/master/NEWS
Third Party Advisory x_refsource_misc
https://security.gentoo.org/glsa/202012-15
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=977166
Patch, Third Party Advisory x_refsource_confirm
https://ubuntu.com/security/CVE-2020-29385
Vendor Advisory x_refsource_confirm
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/164
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EANWYODLOJDFLMBH6WEKJJMQ5PKLEWML/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5H3GNVWMZTYZR3JBYCK57PF7PFMQBNP/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BGZVCTH5O7WBJLYXZ2UOKLYNIFPVR55D/
Scores
CVSS v3
5.5
EPSS
0.0063
EPSS Percentile
70.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details
CWE
CWE-835
Status
published
Products (5)
canonical/ubuntu_linux
20.04
canonical/ubuntu_linux
20.10
fedoraproject/fedora
33
fedoraproject/fedora
34
gnome/gdk-pixbuf
2.39.2 - 2.42.2
Published
Dec 26, 2020
Tracked Since
Feb 18, 2026