CVE-2020-29385

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    CVE-2020-29385

    Published: 26 Dec 2020Last Modified: 7 Aug 2026

    Summary:

    Details: 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: https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/blob/master/NEWS, https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/164, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5H3GNVWMZTYZR3JBYCK57PF7PFMQBNP/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BGZVCTH5O7WBJLYXZ2UOKLYNIFPVR55D/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EANWYODLOJDFLMBH6WEKJJMQ5PKLEWML/, https://security.gentoo.org/glsa/202012-15, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=977166, https://ubuntu.com/security/CVE-2020-29385

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -2518a6817c2b076cdde1d3cc26beb9269a59d725

    Affected versions

    2.42.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2020-29385 | CVE-DB