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CVE Database›CVE-2018-10853

CVE-2018-10853

kernel: kvm: guest userspace to guest kernel write

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.0

Review impact separately from score.

Published · June 5, 2018

Updated · June 30, 2026

Description

A flaw was found in the way Linux kernel KVM hypervisor emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 7
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-250 · Execution with Unnecessary Privileges