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CVE-2016-3157 (GCVE-0-2016-3157)

Vulnerability from cvelistv5 – Published: 2016-04-12 16:00 – Updated: 2024-08-05 23:47
VLAI
Summary
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.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
URL Tags
http://www.ubuntu.com/usn/USN-2971-2 vendor-advisoryx_refsource_UBUNTU
http://xenbits.xen.org/xsa/advisory-171.html x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-2970-1 vendor-advisoryx_refsource_UBUNTU
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-2969-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2968-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2971-3 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2997-1 vendor-advisoryx_refsource_UBUNTU
http://www.debian.org/security/2016/dsa-3607 vendor-advisoryx_refsource_DEBIAN
http://www.ubuntu.com/usn/USN-2971-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2996-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2968-2 vendor-advisoryx_refsource_UBUNTU
http://www.securitytracker.com/id/1035308 vdb-entryx_refsource_SECTRACK
http://www.securityfocus.com/bid/84594 vdb-entryx_refsource_BID
Date Public
2016-03-16 00:00
Show details on NVD website
To clipboard 

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      "current_release_date": "2026-06-28T07:21:21+00:00",
      "cve": "CVE-2016-3157",
      "id": "CVE-2016-3157",
      "initial_release_date": "2016-03-16T00:00:00+00:00",
      "product_status:known_affected": "32",
      "product_status:known_not_affected": "56",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: xen: Privilege escalation on 64-bit Xen PV domains with IO port access privileges (XSA-171)",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-3157.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.