RLSA-2021:4058

    Dashboard / Vulnerabilities / RLSA-2021:4058

    RLSA-2021:4058

    Published: 2 Nov 2021Last Modified: 5 Feb 2026
    Upstream:
    CVE-2021-20254

    Summary: Moderate: samba security update

    Details: Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information. Security Fix(es): * samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token (CVE-2021-20254) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

    References: https://errata.rockylinux.org/RLSA-2021:4058, https://bugzilla.redhat.com/show_bug.cgi?id=1949442

    Affected packages

    Package

    Name: samba

    Purl: pkg:rpm/rocky-linux/samba?distro=rocky-linux-8-4-legacy&epoch=0

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0:4.13.3-5.el8_4

    Affected versions

    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
    RLSA-2021:4058 | CVE-DB