CVE-2017-17449

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    CVE-2017-17449

    Published: 7 Dec 2017Last Modified: 15 Mar 2026

    Summary:

    Details: The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.

    References: https://usn.ubuntu.com/3653-2/, https://source.android.com/security/bulletin/pixel/2018-04-01, https://usn.ubuntu.com/3619-1/, https://usn.ubuntu.com/3619-2/, https://usn.ubuntu.com/3655-1/, https://usn.ubuntu.com/3655-2/, https://usn.ubuntu.com/3653-1/, https://usn.ubuntu.com/3657-1/, https://www.debian.org/security/2017/dsa-4073, https://www.debian.org/security/2018/dsa-4082, https://lkml.org/lkml/2017/12/5/950, https://access.redhat.com/errata/RHSA-2018:1062, https://access.redhat.com/errata/RHSA-2018:1170, http://www.securityfocus.com/bid/102122, https://access.redhat.com/errata/RHSA-2018:1130, https://access.redhat.com/errata/RHSA-2018:0654, https://access.redhat.com/errata/RHSA-2018:0676

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    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