CVE-2018-10901

HIGH

7.8

Description

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.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published7/26/2018

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

linux:linux_kernelredhat:enterprise_linux_desktopredhat:enterprise_linux_serverredhat:enterprise_linux_server_ausredhat:enterprise_linux_workstation

Weaknesses (CWE)

CWE-665

References

http://www.securityfocus.com/bid/104905(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2018:2390(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2018:2391(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2018:2392(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2018:2393(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2018:2394(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10901(secalert@redhat.com)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3444d7da1839b851eefedd372978d8a982316c36(secalert@redhat.com)

https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0(secalert@redhat.com)

https://www.oracle.com/security-alerts/cpujul2020.html(secalert@redhat.com)

https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html(secalert@redhat.com)

http://www.securityfocus.com/bid/104905(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2018:2390(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2018:2391(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2018:2392(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2018:2393(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2018:2394(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10901(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3444d7da1839b851eefedd372978d8a982316c36(af854a3a-2127-422b-91ae-364da2661108)

https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpujul2020.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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