CVE-2020-27673

Public on 2020-10-22

Modified on 2021-01-13

Description

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.

Severity

Medium

See what this means

CVSS v3 Base Score

5.5

See breakdown

Affected Packages

Platform	Package	Release Date	Advisory
Amazon Linux 1	kernel	2021-01-12 22:51	ALAS-2021-1461
Amazon Linux 2 - Core	kernel	2020-12-08 20:55	ALAS2-2020-1566
Amazon Linux 2 - Kernel-5.4 Extra	kernel	2022-01-20 19:50	ALAS2KERNEL-5.4-2022-018

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Amazon Linux	CVSSv2	4.9	AV:L/AC:L/Au:N/C:N/I:N/A:C
NVD	CVSSv3	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	CVSSv2	4.9	AV:L/AC:L/Au:N/C:N/I:N/A:C

References

Red Hat: CVE-2020-27673 Mitre: CVE-2020-27673 FAQs regarding Amazon Linux ALAS/CVE Severity