CVE-2018-1093

    Dashboard / Vulnerabilities / CVE-2018-1093

    CVE-2018-1093

    Published: 2 Apr 2018Last Modified: 16 Apr 2026

    Summary:

    Details: The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.

    References: https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html, https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html, https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html, https://usn.ubuntu.com/3752-1/, https://usn.ubuntu.com/3752-2/, https://usn.ubuntu.com/3754-1/, https://usn.ubuntu.com/3676-1/, https://usn.ubuntu.com/3676-2/, https://usn.ubuntu.com/3752-3/, https://www.debian.org/security/2018/dsa-4188, https://bugzilla.kernel.org/show_bug.cgi?id=199181, https://bugzilla.redhat.com/show_bug.cgi?id=1560782, https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=7dac4a1726a9c64a517d595c40e95e2d0d135f6f, http://openwall.com/lists/oss-security/2018/03/29/1

    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-2018-1093 | CVE-DB