CVE-2021-20266

    Dashboard / Vulnerabilities / CVE-2021-20266

    CVE-2021-20266

    Published: 30 Apr 2021Last Modified: 8 Jul 2026

    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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/, https://security.gentoo.org/glsa/202107-43, https://bugzilla.redhat.com/show_bug.cgi?id=1927741

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -3659b8a04f5b8bacf6535e0124e7fe23f15286bd

    Affected versions

    rpm-4.16.1.2-release
    rpm-4.16.1.1-release
    rpm-4.16.1-release
    rpm-4.16.0-release
    rpm-4.16.0-beta3
    rpm-4.16.0-beta2
    rpm-4.16.0-alpha

    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-2021-20266 | CVE-DB