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    CVE-2018-10901

    A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.

    Published:Aug 2, 2010
    Last Modified:Nov 21, 2024
    EPS:Jul 26, 2018
    EPSS Score:0.00147
    CVSS Score:7.8

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-665 Improper Initialization

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    References

    http://www.securityfocus.com/bid/104905
    https://access.redhat.com/errata/RHSA-2018:2390
    https://access.redhat.com/errata/RHSA-2018:2391
    https://access.redhat.com/errata/RHSA-2018:2392
    https://access.redhat.com/errata/RHSA-2018:2393
    https://access.redhat.com/errata/RHSA-2018:2394
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10901
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3444d7da1839b851eefedd372978d8a982316c36
    https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
    https://www.oracle.com/security-alerts/cpujul2020.html
    https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
    http://www.securityfocus.com/bid/104905
    https://access.redhat.com/errata/RHSA-2018:2390
    https://access.redhat.com/errata/RHSA-2018:2391
    https://access.redhat.com/errata/RHSA-2018:2392
    https://access.redhat.com/errata/RHSA-2018:2393
    https://access.redhat.com/errata/RHSA-2018:2394
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10901
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3444d7da1839b851eefedd372978d8a982316c36
    https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
    https://www.oracle.com/security-alerts/cpujul2020.html
    https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

    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