CVE-2020-29385

MEDIUM
5.5
CVSS Score
Published: December 26, 2020 at 02:01 AM UTC
Updated: June 17, 2026 at 03:11 AM UTC
3 products affected across 3 vendorsFedoraUbuntu LinuxGdk-Pixbuf

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Severity
MEDIUM5.5
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.39.2 < v < 2.42.2
Affected range stops below 2.42.2, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-835

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