Attacker Value
Unknown
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Exploitability
Unknown
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User Interaction
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Privileges Required
Unknown
Attack Vector
Unknown
0

CVE-2016-3157

Disclosure Date: April 12, 2016
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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.

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CVSS V3 Severity and Metrics
Base Score:
None
Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
Unknown
Attack Vector (AV):
Unknown
Attack Complexity (AC):
Unknown
Privileges Required (PR):
Unknown
User Interaction (UI):
Unknown
Scope (S):
Unknown
Confidentiality (C):
Unknown
Integrity (I):
Unknown
Availability (A):
Unknown

General Information

Vendors

  • canonical,
  • xen

Products

  • ubuntu linux 12.04,
  • xen 4.0.0
Technical Analysis