CVE-2018-1092

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    CVE-2018-1092

    Published: 2 Apr 2018Last Modified: 16 Apr 2026

    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://lists.debian.org/debian-lts-announce/2018/05/msg00000.html, https://usn.ubuntu.com/3676-2/, https://usn.ubuntu.com/3677-2/, https://usn.ubuntu.com/3678-1/, https://usn.ubuntu.com/3678-4/, https://usn.ubuntu.com/3678-3/, https://usn.ubuntu.com/3676-1/, https://usn.ubuntu.com/3677-1/, https://usn.ubuntu.com/3678-2/, https://usn.ubuntu.com/3754-1/, http://openwall.com/lists/oss-security/2018/03/29/1, https://access.redhat.com/errata/RHSA-2018:2948, https://www.debian.org/security/2018/dsa-4187, https://access.redhat.com/errata/RHSA-2018:3096, https://access.redhat.com/errata/RHSA-2018:3083, https://www.debian.org/security/2018/dsa-4188, https://bugzilla.kernel.org/show_bug.cgi?id=199179, https://bugzilla.kernel.org/show_bug.cgi?id=199275, https://bugzilla.redhat.com/show_bug.cgi?id=1560777, https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44

    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
    CVE-2018-1092 | CVE-DB