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CVE-2018-10901

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CVE-2018-10901

Published: Jul 26, 2018

Modified: Aug 5, 2024

PUBLISHED

CVSS v3.0

7.8

HIGH

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.

VendorProductVersions

[UNKNOWN]

kernel:

affected
n/a

Weaknesses (CWE)

CWE-665

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

104905
vdb-entry
x_refsource_BID
RHSA-2018:2393
vendor-advisory
x_refsource_REDHAT
RHSA-2018:2390
vendor-advisory
x_refsource_REDHAT
RHSA-2018:2391
vendor-advisory
x_refsource_REDHAT
RHSA-2018:2392
vendor-advisory
x_refsource_REDHAT
RHSA-2018:2394
vendor-advisory
x_refsource_REDHAT

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