Is CVE-2021-37576 in the CISA KEV catalog?

No. CVE-2021-37576 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-37576?

CVE-2021-37576 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-37576?

CVE-2021-37576 has an EPSS score of 0.57% (43th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-37576?

Upgrade linux on debian 11 to 5.10.46-5 or later. Fixes are available for 96 affected products.

CVE & CISA-KEV Catalog

CVE-2021-37576

HIGH

7.8

CVSS v3

NVD

Description

arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.46-5CVE-2021-37576

Fixed in:5.14.6-1CVE-2021-37576

linuxUbuntu

Fixed in:4.15.0-159.167USN-5094-1

Fixed in:5.4.0-88.99USN-5091-1

linux-awsUbuntu

Fixed in:4.15.0-1112.119USN-5094-1

Fixed in:5.4.0-1057.60USN-5091-1

linux-aws-5.11Ubuntu

Fixed in:5.11.0-1019.20~20.04.1USN-5092-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1057.60~18.04.1USN-5091-1

linux-aws-hweUbuntu

Fixed in:4.15.0-1112.119~16.04.1USN-5094-1

linux-azureUbuntu

Fixed in:4.15.0-1124.137~14.04.1USN-5094-1

Fixed in:4.15.0-1124.137~16.04.1USN-5094-1

Fixed in:5.4.0-1059.62USN-5091-1

linux-azure-4.15Ubuntu

Fixed in:4.15.0-1124.137USN-5094-1

linux-azure-5.11Ubuntu

Fixed in:5.11.0-1017.18~20.04.1USN-5092-2

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1059.62~18.04.1USN-5091-1

linux-dell300xUbuntu

Fixed in:4.15.0-1028.33USN-5094-1

linux-gcpUbuntu

Fixed in:4.15.0-1109.123~16.04.1USN-5094-1

Fixed in:5.4.0-1053.57USN-5091-1

linux-gcp-4.15Ubuntu

Fixed in:4.15.0-1109.123USN-5094-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1053.57~18.04.1USN-5091-1

linux-gkeUbuntu

Fixed in:5.4.0-1053.56USN-5091-1

linux-gke-5.4Ubuntu

Fixed in:5.4.0-1053.56~18.04.1USN-5091-1

linux-gkeopUbuntu

Fixed in:5.4.0-1024.25USN-5091-1

linux-gkeop-5.4Ubuntu

Fixed in:5.4.0-1024.25~18.04.1USN-5091-1

linux-hweUbuntu

Fixed in:4.15.0-159.167~16.04.1USN-5094-1

linux-hwe-5.11Ubuntu

Fixed in:5.11.0-37.41~20.04.2USN-5092-2

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-87.98~18.04.1USN-5091-1

linux-image-4.15.0-1028-dell300xUbuntu

Fixed in:4.15.0-1028.33USN-5094-1

linux-image-4.15.0-1081-oracleUbuntu

Fixed in:4.15.0-1081.89~16.04.1USN-5094-1

Fixed in:4.15.0-1081.89USN-5094-1

linux-image-4.15.0-1100-kvmUbuntu

Fixed in:4.15.0-1100.102USN-5094-1

linux-image-4.15.0-1109-gcpUbuntu

Fixed in:4.15.0-1109.123~16.04.1USN-5094-1

Fixed in:4.15.0-1109.123USN-5094-1

linux-image-4.15.0-1112-awsUbuntu

Fixed in:4.15.0-1112.119~16.04.1USN-5094-1

Fixed in:4.15.0-1112.119USN-5094-1

linux-image-4.15.0-1113-snapdragonUbuntu

Fixed in:4.15.0-1113.122USN-5094-1

linux-image-4.15.0-1124-azureUbuntu

Fixed in:4.15.0-1124.137~14.04.1USN-5094-1

Fixed in:4.15.0-1124.137~16.04.1USN-5094-1

Fixed in:4.15.0-1124.137USN-5094-1

linux-image-4.15.0-159-genericUbuntu

Fixed in:4.15.0-159.167~16.04.1USN-5094-1

Fixed in:4.15.0-159.167USN-5094-1

linux-image-4.15.0-159-generic-lpaeUbuntu

Fixed in:4.15.0-159.167USN-5094-1

linux-image-4.15.0-159-lowlatencyUbuntu

Fixed in:4.15.0-159.167~16.04.1USN-5094-1

Fixed in:4.15.0-159.167USN-5094-1

linux-image-5.11.0-1017-azureUbuntu

Fixed in:5.11.0-1017.18~20.04.1USN-5092-2

linux-image-5.11.0-1019-awsUbuntu

Fixed in:5.11.0-1019.20~20.04.1USN-5092-1

linux-image-5.11.0-1019-oracleUbuntu

Fixed in:5.11.0-1019.20~20.04.1USN-5092-2

linux-image-5.11.0-37-genericUbuntu

Fixed in:5.11.0-37.41~20.04.2USN-5092-2

linux-image-5.11.0-37-generic-64kUbuntu

Fixed in:5.11.0-37.41~20.04.2USN-5092-2

linux-image-5.11.0-37-generic-lpaeUbuntu

Fixed in:5.11.0-37.41~20.04.2USN-5092-2

linux-image-5.11.0-37-lowlatencyUbuntu

Fixed in:5.11.0-37.41~20.04.2USN-5092-2

linux-image-5.4.0-1024-gkeopUbuntu

Fixed in:5.4.0-1024.25~18.04.1USN-5091-1

Fixed in:5.4.0-1024.25USN-5091-1

linux-image-5.4.0-1047-kvmUbuntu

Fixed in:5.4.0-1047.49USN-5091-1

linux-image-5.4.0-1053-gcpUbuntu

Fixed in:5.4.0-1053.57~18.04.1USN-5091-1

Fixed in:5.4.0-1053.57USN-5091-1

linux-image-5.4.0-1053-gkeUbuntu

Fixed in:5.4.0-1053.56~18.04.1USN-5091-1

Fixed in:5.4.0-1053.56USN-5091-1

linux-image-5.4.0-1055-oracleUbuntu

Fixed in:5.4.0-1055.59~18.04.1USN-5091-1

Fixed in:5.4.0-1055.59USN-5091-1

linux-image-5.4.0-1057-awsUbuntu

Fixed in:5.4.0-1057.60~18.04.1USN-5091-1

Fixed in:5.4.0-1057.60USN-5091-1

linux-image-5.4.0-1059-azureUbuntu

Fixed in:5.4.0-1059.62~18.04.1USN-5091-1

Fixed in:5.4.0-1059.62USN-5091-1

linux-image-5.4.0-87-genericUbuntu

Fixed in:5.4.0-87.98~18.04.1USN-5091-1

linux-image-5.4.0-87-generic-lpaeUbuntu

Fixed in:5.4.0-87.98~18.04.1USN-5091-1

linux-image-5.4.0-87-lowlatencyUbuntu

Fixed in:5.4.0-87.98~18.04.1USN-5091-1

linux-image-5.4.0-88-genericUbuntu

Fixed in:5.4.0-88.99USN-5091-1

linux-image-5.4.0-88-generic-lpaeUbuntu

Fixed in:5.4.0-88.99USN-5091-1

linux-image-5.4.0-88-lowlatencyUbuntu

Fixed in:5.4.0-88.99USN-5091-1

linux-image-awsUbuntu

Fixed in:5.4.0.1057.40USN-5091-1

Fixed in:5.11.0.1019.20~20.04.18USN-5092-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1112.103USN-5094-1

linux-image-aws-lts-18.04Ubuntu

Fixed in:4.15.0.1112.115USN-5094-1

linux-image-aws-lts-20.04Ubuntu

Fixed in:5.4.0.1057.60USN-5091-1

linux-image-azureUbuntu

Fixed in:4.15.0.1124.97USN-5094-1

Fixed in:4.15.0.1124.115USN-5094-1

Fixed in:5.4.0.1059.39USN-5091-1

linux-image-azure-edgeUbuntu

Fixed in:5.11.0.1017.18~20.04.16USN-5092-2

linux-image-azure-lts-18.04Ubuntu

Fixed in:4.15.0.1124.97USN-5094-1

linux-image-azure-lts-20.04Ubuntu

Fixed in:5.4.0.1059.57USN-5091-1

linux-image-dell300xUbuntu

Fixed in:4.15.0.1028.30USN-5094-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1109.110USN-5094-1

Fixed in:5.4.0.1053.39USN-5091-1

linux-image-gcp-lts-18.04Ubuntu

Fixed in:4.15.0.1109.128USN-5094-1

linux-image-gcp-lts-20.04Ubuntu

Fixed in:5.4.0.1053.63USN-5091-1

linux-image-genericUbuntu

Fixed in:4.15.0.159.148USN-5094-1

Fixed in:5.4.0.88.92USN-5091-1

linux-image-generic-64k-hwe-20.04Ubuntu

Fixed in:5.11.0.37.41~20.04.16USN-5092-2

linux-image-generic-hwe-16.04Ubuntu

Fixed in:4.15.0.159.152USN-5094-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.87.98~18.04.78USN-5091-1

linux-image-generic-hwe-20.04Ubuntu

Fixed in:5.11.0.37.41~20.04.16USN-5092-2

linux-image-generic-lpaeUbuntu

Fixed in:4.15.0.159.148USN-5094-1

Fixed in:5.4.0.88.92USN-5091-1

linux-image-generic-lpae-hwe-18.04Ubuntu

Fixed in:5.4.0.87.98~18.04.78USN-5091-1

linux-image-generic-lpae-hwe-20.04Ubuntu

Fixed in:5.11.0.37.41~20.04.16USN-5092-2

linux-image-gkeUbuntu

Fixed in:4.15.0.1109.110USN-5094-1

Fixed in:5.4.0.1053.63USN-5091-1

linux-image-gke-5.4Ubuntu

Fixed in:5.4.0.1053.56~18.04.18USN-5091-1

Fixed in:5.4.0.1053.63USN-5091-1

linux-image-gkeopUbuntu

Fixed in:5.4.0.1024.27USN-5091-1

linux-image-gkeop-5.4Ubuntu

Fixed in:5.4.0.1024.25~18.04.25USN-5091-1

Fixed in:5.4.0.1024.27USN-5091-1

linux-image-kvmUbuntu

Fixed in:4.15.0.1100.96USN-5094-1

Fixed in:5.4.0.1047.46USN-5091-1

linux-image-lowlatencyUbuntu

Fixed in:4.15.0.159.148USN-5094-1

Fixed in:5.4.0.88.92USN-5091-1

linux-image-lowlatency-hwe-16.04Ubuntu

Fixed in:4.15.0.159.152USN-5094-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.87.98~18.04.78USN-5091-1

linux-image-lowlatency-hwe-20.04Ubuntu

Fixed in:5.11.0.37.41~20.04.16USN-5092-2

linux-image-oemUbuntu

Fixed in:4.15.0.159.152USN-5094-1

Fixed in:5.4.0.87.98~18.04.78USN-5091-1

Fixed in:5.4.0.88.92USN-5091-1

linux-image-oem-osp1Ubuntu

Fixed in:5.4.0.87.98~18.04.78USN-5091-1

Fixed in:5.4.0.88.92USN-5091-1

linux-image-oracleUbuntu

Fixed in:4.15.0.1081.69USN-5094-1

Fixed in:5.4.0.1055.59~18.04.35USN-5091-1

Fixed in:5.11.0.1019.20~20.04.12USN-5092-2

linux-image-oracle-lts-18.04Ubuntu

Fixed in:4.15.0.1081.91USN-5094-1

linux-image-oracle-lts-20.04Ubuntu

Fixed in:5.4.0.1055.55USN-5091-1

linux-image-snapdragonUbuntu

Fixed in:4.15.0.1113.116USN-5094-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.87.98~18.04.78USN-5091-1

linux-image-virtualUbuntu

Fixed in:4.15.0.159.148USN-5094-1

Fixed in:5.4.0.88.92USN-5091-1

linux-image-virtual-hwe-16.04Ubuntu

Fixed in:4.15.0.159.152USN-5094-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.87.98~18.04.78USN-5091-1

linux-image-virtual-hwe-20.04Ubuntu

Fixed in:5.11.0.37.41~20.04.16USN-5092-2

linux-kvmUbuntu

Fixed in:4.15.0-1100.102USN-5094-1

Fixed in:5.4.0-1047.49USN-5091-1

linux-oracleUbuntu

Fixed in:4.15.0-1081.89~16.04.1USN-5094-1

Fixed in:4.15.0-1081.89USN-5094-1

Fixed in:5.4.0-1055.59USN-5091-1

linux-oracle-5.11Ubuntu

Fixed in:5.11.0-1019.20~20.04.1USN-5092-2

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1055.59~18.04.1USN-5091-1

linux-snapdragonUbuntu

Fixed in:4.15.0-1113.122USN-5094-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.57%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Patch2

Third-Party Advisory2

Other references3

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

Embed a live status badge for CVE-2021-37576

Markdown

[![CVE-2021-37576](https://tridentstack.com/cve/badge/CVE-2021-37576.svg)](https://tridentstack.com/cve/CVE-2021-37576)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-37576"><img src="https://tridentstack.com/cve/badge/CVE-2021-37576.svg" alt="CVE-2021-37576"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.