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CVE-2021-38199

Public on 2021-08-08
Modified on 2022-03-07
Description

A flaw was found in the hanging of mounts in the Linux kernel's NFS4 subsystem where remote servers are unreachable for the client during migration of data from one server to another (during trunking detection). This flaw allows a remote NFS4 server (if the client is connected) to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.

Severity
Low
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CVSS v3 Base Score
6.5
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2022-03-07 23:19 ALAS-2022-1571
Amazon Linux 2 - Core kernel 2022-03-07 23:32 ALAS2-2022-1761
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-01-20 23:43 ALAS2KERNEL-5.10-2022-004
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-01-20 19:03 ALAS2KERNEL-5.4-2022-006

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv2 3.3 AV:A/AC:L/Au:N/C:N/I:N/A:P
NVD CVSSv3 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H