CVE-2022-32296

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    CVE-2022-32296

    Published: 5 Jun 2022Last Modified: 21 Oct 2026

    Summary:

    Details: The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.

    References: https://arxiv.org/abs/2209.12993, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9, https://cert-portal.siemens.com/productcert/html/ssa-419740.html, https://cert-portal.siemens.com/productcert/html/ssa-794697.html, https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/32xxx/CVE-2022-32296.json, https://nvd.nist.gov/vuln/detail/CVE-2022-32296, https://www.debian.org/security/2022/dsa-5173, https://github.com/0xkol/rfc6056-device-tracker, https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5

    Affected versions

    v5.18-rc1

    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-2022-32296 | CVE-DB