CVE-2018-10853

HIGH

Linux kernel KVM <4.18 - Privilege Escalation

Title source: llm

Description

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 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.

References (15)

Scores

CVSS v3 7.0
EPSS 0.0003
EPSS Percentile 8.3%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE
CWE-269 CWE-250
Status published

Affected Products (4)

canonical/ubuntu_linux
canonical/ubuntu_linux
debian/debian_linux
linux/linux_kernel < 4.18

Timeline

Published Sep 11, 2018
Tracked Since Feb 18, 2026