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CVE-2019-14821

CVE information

Published

4 years ago

Last Modified

2 months ago

CVSSv2.0 Severity

High

CVSSv3.1 Severity

High

Impact Analysis

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Description

An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system..

CVSSv2.0 Score

Severity
High
Base Score
7.2/10
Exploit Score
3.9/10
Access Vector
Local
Access Complexity
Low
Authentication Required
None
Impact Score
10/10
Confidentiality Impact
Complete
Availability Impact
Complete
Integrity Impact
Complete

CVSSv3.1 Score

Severity
High
Base Score
8.8/10
Exploit Score
2/10
Access Vector
Local
Access Complexity
Low
Privileges Required
Low
Impact Score
6/10
Confidentiality Impact
High
Availability Impact
High
Integrity Impact
High
Scope
Changed
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
3.16 3.16.74
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
4.14 4.14.146
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
4.19 4.19.75
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
4.4 4.4.194
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
4.9 4.9.194
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
5.2 5.2.17
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
5.3 5.3.1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
2.6.27 -
cpe:2.3:o:linux:linux_kernel:5.4:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_for_real_time:7:*:*:*:*:*:
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:
  Yes
- -
cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
  Yes
- -
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:oracle:sd-wan_edge:8.2:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:oracle:sd-wan_edge:7.3:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:oracle:sd-wan_edge:8.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:oracle:sd-wan_edge:8.1:*:*:*:*:*:*:*
  Yes
- -

References