// For flags

CVE-2020-12888

Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The VFIO PCI driver in the Linux kernel through 5.6.13 mishandles attempts to access disabled memory space.

El controlador VFIO PCI en el kernel de Linux versiones hasta 5.6.13, maneja inapropiadamente los intentos para acceder al espacio de memoria deshabilitado.

A flaw was found in the Linux kernel, where it allows userspace processes, for example, a guest VM, to directly access h/w devices via its VFIO driver modules. The VFIO modules allow users to enable or disable access to the devices' MMIO memory address spaces. If a user attempts to access the read/write devices' MMIO address space when it is disabled, some h/w devices issue an interrupt to the CPU to indicate a fatal error condition, crashing the system. This flaw allows a guest user or process to crash the host system resulting in a denial of service.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-05-15 CVE Reserved
  • 2020-05-15 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-248: Uncaught Exception
  • CWE-755: Improper Handling of Exceptional Conditions
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Netapp
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Solidfire Baseboard Management Controller Firmware
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--
Affected
in Netapp
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Solidfire Baseboard Management Controller
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--
Safe
Netapp
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Bootstrap Os
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--
Affected
in Netapp
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Hci Compute Node
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--
Safe
Netapp
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A700s Firmware
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--
Affected
in Netapp
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A700s
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--
Safe
Netapp
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H300s Firmware
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--
Affected
in Netapp
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H300s
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--
Safe
Netapp
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H500s Firmware
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--
Affected
in Netapp
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H500s
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--
Safe
Netapp
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H700s Firmware
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--
Affected
in Netapp
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H700s
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--
Safe
Netapp
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H300e Firmware
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--
Affected
in Netapp
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H300e
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--
Safe
Netapp
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H500e Firmware
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--
Affected
in Netapp
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H500e
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--
Safe
Netapp
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H700e Firmware
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--
Affected
in Netapp
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H700e
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--
Safe
Netapp
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H410s Firmware
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--
Affected
in Netapp
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H410s
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--
Safe
Netapp
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H410c Firmware
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--
Affected
in Netapp
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H410c
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--
Safe
Netapp
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H610c Firmware
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--
Affected
in Netapp
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H610c
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--
Safe
Netapp
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H610s Firmware
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--
Affected
in Netapp
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H610s
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--
Safe
Netapp
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H615c Firmware
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--
Affected
in Netapp
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H615c
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--
Safe
Linux
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Linux Kernel
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<= 5.6.13
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-
Affected
Fedoraproject
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Fedora
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31
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-
Affected
Fedoraproject
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Fedora
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32
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-
Affected
Opensuse
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Leap
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15.1
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-
Affected
Opensuse
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Leap
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15.2
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-
Affected
Debian
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Debian Linux
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9.0
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-
Affected
Canonical
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Ubuntu Linux
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14.04
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esm
Affected
Canonical
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Ubuntu Linux
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16.04
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esm
Affected
Canonical
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Ubuntu Linux
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18.04
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lts
Affected
Canonical
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Ubuntu Linux
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20.04
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lts
Affected
Netapp
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Active Iq Unified Manager
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-vmware_vsphere
Affected
Netapp
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Cloud Backup
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--
Affected
Netapp
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Element Software
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--
Affected
Netapp
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Hci Management Node
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--
Affected
Netapp
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Solidfire
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--
Affected
Netapp
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Steelstore Cloud Integrated Storage
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--
Affected