CVE-2018-10853

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    CVE-2018-10853

    Published: 11 Sept 2018Last Modified: 16 Apr 2026

    Summary:

    Details: A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.

    References: http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html, https://access.redhat.com/errata/RHSA-2020:0179, https://access.redhat.com/errata/RHSA-2020:0103, https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html, https://usn.ubuntu.com/3777-1/, https://access.redhat.com/errata/RHSA-2019:2043, https://access.redhat.com/errata/RHSA-2020:0036, https://usn.ubuntu.com/3777-2/, https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html, https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html, https://access.redhat.com/errata/RHSA-2019:2029, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6, https://www.openwall.com/lists/oss-security/2018/09/02/1

    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-2018-10853 | CVE-DB