CVE-2020-35498

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    CVE-2020-35498

    Published: 11 Feb 2021Last Modified: 8 Jul 2026

    Summary:

    Details: A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/, https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html, https://security.gentoo.org/glsa/202311-16, https://www.debian.org/security/2021/dsa-4852, https://bugzilla.redhat.com/show_bug.cgi?id=1908845, https://www.openwall.com/lists/oss-security/2021/02/10/4

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 22d4614ddf83988a3771fb379ea029e663b4455a
    Fixed -3fbe4e9e8ba20ab1c7e2fe3804cb4e1f64c63e2c

    Affected versions

    v2.13.2
    v2.13.1
    v2.13.0

    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-2020-35498 | CVE-DB