UBUNTU-CVE-2022-33743

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    UBUNTU-CVE-2022-33743

    Published: 5 Jul 2022Last Modified: 14 Sept 2026
    Upstream:
    CVE-2022-33743
    Aliases:
    USN-5623-1
    USN-5624-1
    USN-5633-1

    Summary:

    Details: network backend may cause Linux netfront to use freed SKBs While adding logic to support XDP (eXpress Data Path), a code label was moved in a way allowing for SKBs having references (pointers) retained for further processing to nevertheless be freed.

    References: https://ubuntu.com/security/CVE-2022-33743, https://xenbits.xen.org/xsa/advisory-405.html, https://xenbits.xenproject.org/xsa/advisory-405.txt, http://xenbits.xen.org/xsa/advisory-405.html, http://www.openwall.com/lists/oss-security/2022/07/05/5, https://ubuntu.com/security/notices/USN-5623-1, https://ubuntu.com/security/notices/USN-5624-1, https://ubuntu.com/security/notices/USN-5633-1, https://ubuntu.com/security/notices/USN-5635-1, https://ubuntu.com/security/notices/USN-5640-1, https://ubuntu.com/security/notices/USN-5644-1, https://ubuntu.com/security/notices/USN-5648-1, https://ubuntu.com/security/notices/USN-5655-1, https://ubuntu.com/security/notices/USN-5683-1, https://ubuntu.com/security/notices/USN-5773-1, https://ubuntu.com/security/notices/USN-5789-1, https://www.cve.org/CVERecord?id=CVE-2022-33743

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/linux-hwe-edge?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    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
    UBUNTU-CVE-2022-33743 | CVE-DB