CVE-2018-1120

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    CVE-2018-1120

    Published: 20 Jun 2018Last Modified: 16 Apr 2026

    Summary:

    Details: A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).

    References: https://usn.ubuntu.com/3910-1/, https://usn.ubuntu.com/3910-2/, http://www.securityfocus.com/bid/104229, https://access.redhat.com/errata/RHSA-2018:3096, https://usn.ubuntu.com/3752-1/, https://usn.ubuntu.com/3752-3/, https://usn.ubuntu.com/3752-2/, https://access.redhat.com/errata/RHSA-2018:2948, https://security.gentoo.org/glsa/201805-14, https://access.redhat.com/errata/RHSA-2018:3083, https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f7ccc2ccc2e70c6054685f5e3522efa81556830, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1120, http://seclists.org/oss-sec/2018/q2/122, https://www.exploit-db.com/exploits/44806/

    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