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.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
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Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2018-2958 | 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. |
References
History
No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-05T07:54:35.810Z
Reserved: 2018-05-09T00:00:00.000Z
Link: CVE-2018-10901
No data.
Status : Modified
Published: 2018-07-26T17:29:00.893
Modified: 2024-11-21T03:42:15.617
Link: CVE-2018-10901
OpenCVE Enrichment
No data.
Weaknesses
EUVD