UBUNTU-CVE-2021-21779

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    UBUNTU-CVE-2021-21779

    Published: 8 Jul 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-21779
    Aliases:
    USN-5024-1

    Summary:

    Details: A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.

    References: https://ubuntu.com/security/CVE-2021-21779, https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238, https://ubuntu.com/security/notices/USN-5024-1, https://www.cve.org/CVERecord?id=CVE-2021-21779

    Affected packages

    Package

    Name: qtwebkit-opensource-src

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-2ubuntu1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    5.4.2+dfsg-1ubuntu2.1

    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
    UBUNTU-CVE-2021-21779 | CVE-DB