What is CVE-2021-28971?

CVE-2021-28971 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2021-28971 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-28971?

CVE-2021-28971 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-28971?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-28971 patch availability.

Is CVE-2021-28971 actively exploited?

CVE-2021-28971 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-28971

Medium

In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel through 5.11.8 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, aka CID-d88d05a9e0b6.

Package Linux Kernel

Published 2021-03-22

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-755

CVE-2021-28971 is classified as CWE-755

See CWE-755 on MITRE CWE for full details on this weakness type.

References

7 total

Kernel Git
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d88d05a9e0b6d9356e97129d4ff9942d765f46ea

Mailing List Patch Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

Mailing List Third Party Advisory
Lists
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
Lists
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2021-28971

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2021-03-22

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-28971?

CVE-2021-28971 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2021-28971 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-28971?

CVE-2021-28971 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-28971?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-28971 patch availability.
Is CVE-2021-28971 actively exploited?

No. CVE-2021-28971 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.