medium
6.2
CWE
755 248
Advisory Published
CVE Published
Updated

CVE-2020-12888

First published: Thu May 14 2020(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/kernel-rt<0:3.10.0-1127.13.1.rt56.1110.el7
0:3.10.0-1127.13.1.rt56.1110.el7
redhat/kernel<0:3.10.0-1127.13.1.el7
0:3.10.0-1127.13.1.el7
redhat/kernel-alt<0:4.14.0-115.26.1.el7a
0:4.14.0-115.26.1.el7a
redhat/kernel<0:3.10.0-327.89.1.el7
0:3.10.0-327.89.1.el7
redhat/kernel<0:3.10.0-514.78.1.el7
0:3.10.0-514.78.1.el7
redhat/kernel<0:3.10.0-693.71.2.el7
0:3.10.0-693.71.2.el7
redhat/kernel<0:3.10.0-957.56.1.el7
0:3.10.0-957.56.1.el7
redhat/kernel<0:3.10.0-1062.30.1.el7
0:3.10.0-1062.30.1.el7
redhat/kernel-rt<0:4.18.0-193.13.2.rt13.65.el8_2
0:4.18.0-193.13.2.rt13.65.el8_2
redhat/kernel<0:4.18.0-193.13.2.el8_2
0:4.18.0-193.13.2.el8_2
redhat/kernel<0:4.18.0-80.27.1.el8_0
0:4.18.0-80.27.1.el8_0
redhat/kernel<0:4.18.0-147.24.2.el8_1
0:4.18.0-147.24.2.el8_1
IBM Data Risk Manager<=2.0.6
Linux Kernel<=5.6.13
Fedoraproject Fedora=31
Fedoraproject Fedora=32
openSUSE=15.1
openSUSE=15.2
Debian GNU/Linux=9.0
Ubuntu Linux=14.04
Ubuntu Linux=16.04
Ubuntu Linux=18.04
Ubuntu Linux=20.04
NetApp Active IQ Unified Manager for VMware vSphere
netapp cloud backup
NetApp Element Software
netapp hci management node
netapp solidfire
NetApp SteelStore
All of
netapp solidfire baseboard management controller firmware
netapp solidfire baseboard management controller
All of
netapp bootstrap os
netapp hci compute node
All of
NetApp AFF A700s Firmware
netapp a700s
All of
netapp h300s firmware
netapp h300s
All of
NetApp H500S Firmware
netapp h500s
All of
netapp h700s firmware
netapp h700s
All of
netapp h300e firmware
netapp h300e
All of
netapp h500e firmware
netapp h500e
All of
netapp h700e firmware
netapp h700e
All of
netapp h410s firmware
netapp h410s
All of
netapp h410c firmware
netapp h410c
All of
netapp h610c firmware
netapp h610c
All of
netapp h610s firmware
netapp h610s
All of
netapp h615c firmware
netapp h615c
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.16-1
Linux kernel<=5.6.13
Fedora=31
Fedora=32
SUSE Linux=15.1
SUSE Linux=15.2
Debian=9.0
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=18.04
Ubuntu=20.04
NetApp Cloud Backup
NetApp Element OS
NetApp HCI Management Node
NetApp SolidFire & HCI Storage Node
NetApp SteelStore Cloud Integrated Storage
NetApp SolidFire Baseboard Management Controller Firmware
NetApp SolidFire Baseboard Management Controller
NetApp HCI Bootstrap OS
NetApp HCI Compute Node
NetApp AFF A700s Firmware
NetApp A700s
NetApp H300S Firmware
NetApp H300S
NetApp H500S Firmware
NetApp H500s
NetApp H700S
NetApp H700S
NetApp H300E Firmware
NetApp H300E Firmware
NetApp H500E
NetApp H500E
NetApp H700E
NetApp H700E
NetApp H410S Firmware
NetApp H410S Firmware
NetApp H410C Firmware
NetApp H410C
NetApp H610C Firmware
NetApp H610C Firmware
NetApp H610S Firmware
NetApp H610S Firmware
NetApp H615C
NetApp H615C

Remedy

https://lore.kernel.org/kvm/158871401328.15589.17598154478222071285.stgit@gimli.home/

Remedy

https://lore.kernel.org/kvm/158871570274.15589.10563806532874116326.stgit@gimli.home/

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2020-12888?

    CVE-2020-12888 is categorized as a high-severity vulnerability affecting the Linux kernel.

  • How do I fix CVE-2020-12888?

    To fix CVE-2020-12888, update your Linux kernel to the patched version provided by your distribution.

  • What products are affected by CVE-2020-12888?

    CVE-2020-12888 affects multiple distributions of the Linux kernel, including specific versions from RedHat, Debian, Ubuntu, and Fedora.

  • What types of attacks can exploit CVE-2020-12888?

    CVE-2020-12888 can be exploited by malicious userspace processes to gain unauthorized access to hardware devices.

  • When was CVE-2020-12888 disclosed?

    CVE-2020-12888 was disclosed in July 2020.

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