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CVE-2021-3759

Public on 2022-08-23
Modified on 2024-01-14
Description

A memory overflow vulnerability was found in the Linux kernel's ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. 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 - Kernel-5.10 Extra kernel 2022-12-01 18:21 ALAS2KERNEL-5.10-2022-023
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-12-01 18:21 ALAS2KERNEL-5.4-2022-039

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 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-2021-3759 Mitre: CVE-2021-3759 FAQs regarding Amazon Linux ALAS/CVE Severity