CVE Vulnerability

CVE-2020-27673

An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.

4.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://xenbits.xen.org/xsa/advisory-332.html Patch Third Party Advisory
https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070 Patch Third Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070 Patch Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202011-06 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/19/6 Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Information

Published : 2020-10-22 09:15

Updated : 2022-04-26 04:23

NVD link : CVE-2020-27673

Mitre link : CVE-2020-27673

Products Affected

Linux

Linux Kernel

CWE
NVD-CWE-noinfo