CVE-2016-3157

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.

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-264

Affected software

No affected versions have been published.

Timeline

Published: Apr 12, 2016
Last modified: Jun 17, 2026
NVD status: Modified

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