CVE-2016-3157

High

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.

Package Linux Kernel
Published 2016-04-12
Last modified 2026-05-06
CVSS version 3.0
Patch available
Awaiting data

CVSS 3.0 score

7.8

out of 10
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-264

CVE-2016-3157 is a Permissions, Privileges and Access Control vulnerability

What is Permissions, Privileges and Access Control?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2016-3157 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2016-3157?

    CVE-2016-3157 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2016-3157 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2016-3157?

    CVE-2016-3157 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2016-3157?

    No patch is currently available for CVE-2016-3157. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2016-3157 actively exploited?

    No — CVE-2016-3157 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Permissions, Privileges and Access Control (CWE-264)?

    Weaknesses in this category are related to the management of permissions, privileges, and access controls. View CWE-264 on MITRE CWE →

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