UBUNTU-CVE-2018-15859

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    UBUNTU-CVE-2018-15859

    Published: 25 Aug 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-15859

    Summary:

    Details: Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because lookup failures are mishandled.

    References: https://ubuntu.com/security/CVE-2018-15859, https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html, https://ubuntu.com/security/notices/USN-3786-1, https://ubuntu.com/security/notices/USN-3786-2, https://www.cve.org/CVERecord?id=CVE-2018-15859

    Affected packages

    Package

    Name: libxkbcommon

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.4.1-0ubuntu1.1

    Affected versions

    0.3.1-1
    0.3.1-2

    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