UBUNTU-CVE-2018-7191

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    UBUNTU-CVE-2018-7191

    Published: 17 May 2019Last Modified: 9 Sept 2026
    Upstream:
    CVE-2018-7191

    Summary:

    Details: In the tun subsystem in the Linux kernel before 4.13.14, dev_get_valid_name is not called before register_netdevice. This allows local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. This is similar to CVE-2013-4343.

    References: https://ubuntu.com/security/CVE-2018-7191, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743792, https://git.kernel.org/linus/0ad646c81b2182f7fa67ec0c8c825e0ee165696d, https://git.kernel.org/linus/5c25f65fd1e42685f7ccd80e0621829c105785d9, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748846, https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.14, https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ad646c81b2182f7fa67ec0c8c825e0ee165696d, https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c25f65fd1e42685f7ccd80e0621829c105785d9, https://github.com/torvalds/linux/commit/0ad646c81b2182f7fa67ec0c8c825e0ee165696d, https://github.com/torvalds/linux/commit/5c25f65fd1e42685f7ccd80e0621829c105785d9, https://www.cve.org/CVERecord?id=CVE-2018-7191

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    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