CVE-2017-7518

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.

Metrics

CVSS 3.0 7.8/10CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-250CWE-755

Affected software

No affected versions have been published.

Timeline

Published
Jul 30, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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