CVE-2016-3157

—

CVSS 3.0

7.8 high

EPSS

<1%p42

Published

Apr 12, 2016 (Apr 12, 2016)

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.

Vendors: xen canonical
Products: xen, ubuntu linux
Weakness: CWE-264
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.5%)

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