CVEvulnerability

CVE-2018-10853

7.8 HIGH Published 2018-09-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-09-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
7.0 HIGH — CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0 ([email protected])
7.8 HIGH — CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-250, CWE-269

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.

Affected configurations

• canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • debian debian linux 8.0 • linux linux kernel (< 4.18)

Related

Weakness · CWE (2)

  • CWE-250 Execution with Unnecessary Privileges weakness
  • CWE-269 Improper Privilege Management weakness

References