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cve[email protected]CVE-2018-10901
HistoryJul 26, 2018 - 5:29 p.m.

CVE-2018-10901

2018-07-2617:29:00
CWE-665
web.nvd.nist.gov
103
linux
kernel
kvm
virtualization
vulnerability
cve-2018-10901
privilege escalation
nvd

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.001 Low

EPSS

Percentile

26.6%

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.

Affected configurations

NVD
Node
linuxlinux_kernelRange<2.6.36
Node
redhatenterprise_linux_desktopMatch6.0
OR
redhatenterprise_linux_serverMatch6.0
OR
redhatenterprise_linux_server_ausMatch6.4
OR
redhatenterprise_linux_server_ausMatch6.5
OR
redhatenterprise_linux_server_ausMatch6.6
OR
redhatenterprise_linux_workstationMatch6.0

CNA Affected

[
  {
    "product": "kernel:",
    "vendor": "[UNKNOWN]",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.001 Low

EPSS

Percentile

26.6%