UBUNTU-CVE-2021-20266

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    UBUNTU-CVE-2021-20266

    Published: 30 Apr 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-20266
    Aliases:
    USN-5273-1

    Summary:

    Details: A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability.

    References: https://ubuntu.com/security/CVE-2021-20266, https://github.com/rpm-software-management/rpm/pull/1500, https://ubuntu.com/security/notices/USN-5273-1, https://www.cve.org/CVERecord?id=CVE-2021-20266

    Affected packages

    Package

    Name: rpm

    Purl: pkg:deb/ubuntu/[email protected]+dfsg1-2ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.14.1+dfsg1-2ubuntu0.1~esm1

    Affected versions

    4.12.0.2+dfsg1-2build2

    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-2021-20266 | CVE-DB