RLSA-2026:91365

    Dashboard / Vulnerabilities / RLSA-2026:91365

    RLSA-2026:91365

    Published: 30 Oct 2026Last Modified: 30 Oct 2026
    Upstream:
    CVE-2026-88806

    Summary: Important: libX11 security update

    Details: The libX11 packages contain the core X11 protocol client library. Security Fix(es): * libX11: libX11: Heap-based buffer overflow via malicious X server (CVE-2026-88806) 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-2026:91365, https://bugzilla.redhat.com/show_bug.cgi?id=2538514, https://access.redhat.com/errata/RHSA-2026:91365

    Affected packages

    Package

    Name: libX11

    Purl: pkg:rpm/rocky-linux/libX11?distro=rocky-linux-9&epoch=0

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0:1.8.12-1.el9_8.1

    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-2026:91365 | CVE-DB