UBUNTU-CVE-2017-17449

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    UBUNTU-CVE-2017-17449

    Published: 6 Dec 2017Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-17449
    Aliases:
    USN-3619-1
    USN-3619-2
    USN-3653-1

    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://ubuntu.com/security/CVE-2017-17449, https://lkml.org/lkml/2017/12/5/950, https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=93c647643b48f0131f02e45da3bd367d80443291, https://ubuntu.com/security/notices/USN-3619-1, https://ubuntu.com/security/notices/USN-3619-2, https://ubuntu.com/security/notices/USN-3653-1, https://ubuntu.com/security/notices/USN-3653-2, https://ubuntu.com/security/notices/USN-3655-1, https://ubuntu.com/security/notices/USN-3655-2, https://ubuntu.com/security/notices/USN-3657-1, https://www.cve.org/CVERecord?id=CVE-2017-17449

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-149.199

    Affected versions

    3.11.0-12.19

    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