CVE-2021-28971

Public on 2021-03-22

Modified on 2022-01-10

Description

A flaw was found in the Linux kernel. On some Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS status in a PEBS record is mishandled.

Severity

Medium

See what this means

CVSS v3 Base Score

4.7

See breakdown

Affected Packages

Platform	Package	Release Date	Advisory
Amazon Linux 1	kernel	2021-05-20 21:12	ALAS-2021-1503
Amazon Linux 2 - Kernel-5.4 Extra	kernel	2022-01-11 23:55	ALAS2KERNEL-5.4-2022-002

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	4.7	CVSS:3.1/AV:L/AC:H/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
NVD	CVSSv2	4.9	AV:L/AC:L/Au:N/C:N/I:N/A:C

References

Red Hat: CVE-2021-28971 Mitre: CVE-2021-28971 FAQs regarding Amazon Linux ALAS/CVE Severity