USN-8024-1

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    USN-8024-1

    Published: 11 Feb 2026Last Modified: 27 Apr 2026

    Summary: libwebsockets vulnerabilities

    Details: Raffaele Bova discovered that Libwebsockets incorrectly handled memory when the upgrade header is not valid in the WebSocket server. An attacker could possibly use this issue to cause a denial of service. (CVE-2025-11677) Raffaele Bova discovered that Libwebsockets did not properly check the size of the destination buffer in the async-dns component. An attacker could possibly use this issue to cause applications to crash, leading to a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2025-11678)

    References: https://ubuntu.com/security/notices/USN-8024-1, https://ubuntu.com/security/CVE-2025-11677, https://ubuntu.com/security/CVE-2025-11678

    Affected packages

    Package

    Name: libwebsockets

    Purl: pkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.2.1-3ubuntu0.1~esm1

    Affected versions

    2.0.3-3build1

    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
    USN-8024-1 | CVE-DB