CVE-2021-3472

    Dashboard / Vulnerabilities / CVE-2021-3472

    CVE-2021-3472

    Published: 26 Apr 2021Last Modified: 7 Aug 2026

    Summary:

    Details: A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/, https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html, https://security.gentoo.org/glsa/202104-02, https://www.debian.org/security/2021/dsa-4893, https://www.tenable.com/plugins/nessus/148701, https://www.zerodayinitiative.com/advisories/ZDI-21-463/, http://www.openwall.com/lists/oss-security/2021/04/13/1, https://bugzilla.redhat.com/show_bug.cgi?id=1944167, https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd, https://lists.x.org/archives/xorg-announce/2021-April/003080.html, https://seclists.org/oss-sec/2021/q2/20

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -6b767cdf6574081164aa6c6a7b617cda579b84c6

    Affected versions

    7.0

    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-2021-3472 | CVE-DB