UBUNTU-CVE-2018-1092

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    UBUNTU-CVE-2018-1092

    Published: 1 Apr 2018Last Modified: 26 Aug 2026
    Upstream:
    CVE-2018-1092
    Aliases:
    USN-3676-1
    USN-3676-2
    USN-3677-1

    Summary:

    Details: The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.

    References: https://ubuntu.com/security/CVE-2018-1092, https://bugzilla.kernel.org/show_bug.cgi?id=199179, https://ubuntu.com/security/notices/USN-3676-1, https://ubuntu.com/security/notices/USN-3676-2, https://ubuntu.com/security/notices/USN-3677-1, https://ubuntu.com/security/notices/USN-3677-2, https://ubuntu.com/security/notices/USN-3678-1, https://ubuntu.com/security/notices/USN-3678-2, https://ubuntu.com/security/notices/USN-3678-3, https://ubuntu.com/security/notices/USN-3678-4, https://ubuntu.com/security/notices/USN-3754-1, https://www.cve.org/CVERecord?id=CVE-2018-1092

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-157.207

    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