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CVE-2021-3744

Public on 2021-10-28
Modified on 2021-11-04
Description

A flaw was found in the Linux kernel. A memory leak in the ccp-ops crypto driver can allow attackers to cause a denial of service. This vulnerability is similar with the older CVE-2019-18808. The highest threat from this vulnerability is to system availability.

Severity
Medium
See what this means
CVSS v3 Base Score
5.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core kernel 2021-10-28 23:22 ALAS2-2021-1719
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-01-20 23:56 ALAS2KERNEL-5.10-2022-007
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-07-19 16:02 ALAS2KERNEL-5.4-2022-031
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-01-20 19:10 ALAS2KERNEL-5.4-2022-009
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-06-30 22:29 ALAS2KERNEL-5.4-2022-027
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-07-11 14:43 ALAS2KERNEL-5.4-2022-029
Amazon Linux 2 - Microvm-kernel-4.14 Extra microvm-kernel 2023-09-14 04:27 ALAS2MICROVM-KERNEL-4.14-2023-001

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
NVD CVSSv2 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P
NVD CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Red Hat: CVE-2021-3744 Mitre: CVE-2021-3744 FAQs regarding Amazon Linux ALAS/CVE Severity