PT-2018-10143
CVE-2018-10853
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Published
2018-06-19
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Updated
2019-10-03
Description by
CVSS 3.1
7.8
HighMetricsAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Linux kernel KVM hypervisor versions prior to 4.18
Description
A flaw was found in the way Linux kernel KVM hypervisor emulated certain instructions. It did not check the current privilege level while emulating unprivileged instructions, which could allow an unprivileged guest user or process to potentially escalate privileges inside the guest.
Recommendations
For versions prior to 4.18, update to version 4.18 or later to resolve the issue. As a temporary workaround, consider restricting access to unprivileged instructions until a patch is available.
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