CVE-2021-28711

Public on 2022-01-05
Modified on 2022-02-04
Description
A denial of service flaw for virtual machine guests in the Linux kernel's Xen hypervisor subsystem was found in the way users call some interrupts with high frequency from one of the guests.
A local user could use this flaw to starve the resources resulting in a denial of service.
Severity
Medium severity
Medium
CVSS v3 Base Score
6.2
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 1 kernel 2022-02-04 ALAS-2022-1563 Fixed
Amazon Linux 1 kernel 2023-02-17 ALAS-2023-1688 Fixed
Amazon Linux 2 - Core kernel 2022-02-04 ALAS2-2022-1749 Fixed
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-01-26 ALAS2KERNEL-5.10-2022-009 Fixed
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-01-26 ALAS2KERNEL-5.4-2022-021 Fixed

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv2 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P
NVD CVSSv3 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H