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Execution with Unnecessary Privileges Affecting kernel-bootwrapper package, versions *

Severity

 Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.06% (30th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELBOOTWRAPPER-1960414
  • published26 Jul 2021
  • disclosed16 Mar 2016
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Introduced: 16 Mar 2016

CVE-2016-3157  (opens in a new tab)
CWE-250  (opens in a new tab)
First added by Snyk

How to fix?

There is no fixed version for Centos:7 kernel-bootwrapper.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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.