Is CVE-2021-28375 in the CISA KEV catalog?

No. CVE-2021-28375 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28375?

CVE-2021-28375 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-28375?

CVE-2021-28375 has an EPSS score of 0.30% (22th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28375?

Upgrade linux on debian 11 to 5.10.24-1 or later. Fixes are available for 69 affected products.

CVE & CISA-KEV Catalog

CVE-2021-28375

HIGH

7.8

CVSS v3

NVD

Description

An issue was discovered in the Linux kernel through 5.11.6. fastrpc_internal_invoke in drivers/misc/fastrpc.c does not prevent user applications from sending kernel RPC messages, aka CID-20c40794eb85. This is a related issue to CVE-2019-2308.

CWE-862Missing Authorization

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.24-1CVE-2021-28375

linuxUbuntu

Fixed in:5.4.0-73.82USN-4945-1

linux-awsUbuntu

Fixed in:5.4.0-1048.50USN-4945-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1048.50~18.04.1USN-4945-1

linux-azureUbuntu

Fixed in:5.4.0-1047.49USN-4945-1

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1047.49~18.04.1USN-4945-1

linux-gcpUbuntu

Fixed in:5.4.0-1043.46USN-4945-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1043.46~18.04.1USN-4945-1

linux-gkeUbuntu

Fixed in:5.4.0-1043.45USN-4945-1

linux-gke-5.4Ubuntu

Fixed in:5.4.0-1043.45~18.04.1USN-4945-1

linux-gkeopUbuntu

Fixed in:5.4.0-1015.16USN-4945-1

linux-gkeop-5.4Ubuntu

Fixed in:5.4.0-1015.16~18.04.1USN-4945-1

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-73.82~18.04.1USN-4945-1

linux-hwe-5.8Ubuntu

Fixed in:5.8.0-53.60~20.04.1USN-4949-1

linux-image-5.10.0-1021-oemUbuntu

Fixed in:5.10.0-1021.22USN-4911-1

linux-image-5.4.0-1015-gkeopUbuntu

Fixed in:5.4.0-1015.16~18.04.1USN-4945-1

Fixed in:5.4.0-1015.16USN-4945-1

linux-image-5.4.0-1035-raspiUbuntu

Fixed in:5.4.0-1035.38~18.04.1USN-4945-2

Fixed in:5.4.0-1035.38USN-4945-2

linux-image-5.4.0-1039-kvmUbuntu

Fixed in:5.4.0-1039.40USN-4945-1

linux-image-5.4.0-1043-gcpUbuntu

Fixed in:5.4.0-1043.46~18.04.1USN-4945-1

Fixed in:5.4.0-1043.46USN-4945-1

linux-image-5.4.0-1043-gkeUbuntu

Fixed in:5.4.0-1043.45~18.04.1USN-4945-1

Fixed in:5.4.0-1043.45USN-4945-1

linux-image-5.4.0-1044-oracleUbuntu

Fixed in:5.4.0-1044.47~18.04.1USN-4945-1

linux-image-5.4.0-1045-oracleUbuntu

Fixed in:5.4.0-1045.49+1USN-4945-1

linux-image-5.4.0-1047-azureUbuntu

Fixed in:5.4.0-1047.49~18.04.1USN-4945-1

Fixed in:5.4.0-1047.49USN-4945-1

linux-image-5.4.0-1048-awsUbuntu

Fixed in:5.4.0-1048.50~18.04.1USN-4945-1

Fixed in:5.4.0-1048.50USN-4945-1

linux-image-5.4.0-73-genericUbuntu

Fixed in:5.4.0-73.82~18.04.1USN-4945-1

Fixed in:5.4.0-73.82USN-4945-1

linux-image-5.4.0-73-generic-lpaeUbuntu

Fixed in:5.4.0-73.82~18.04.1USN-4945-1

Fixed in:5.4.0-73.82USN-4945-1

linux-image-5.4.0-73-lowlatencyUbuntu

Fixed in:5.4.0-73.82~18.04.1USN-4945-1

Fixed in:5.4.0-73.82USN-4945-1

linux-image-5.6.0-1056-oemUbuntu

Fixed in:5.6.0-1056.60USN-4947-1

linux-image-5.8.0-53-genericUbuntu

Fixed in:5.8.0-53.60~20.04.1USN-4949-1

linux-image-5.8.0-53-generic-64kUbuntu

Fixed in:5.8.0-53.60~20.04.1USN-4949-1

linux-image-5.8.0-53-generic-lpaeUbuntu

Fixed in:5.8.0-53.60~20.04.1USN-4949-1

linux-image-5.8.0-53-lowlatencyUbuntu

Fixed in:5.8.0-53.60~20.04.1USN-4949-1

linux-image-awsUbuntu

Fixed in:5.4.0.1048.30USN-4945-1

Fixed in:5.4.0.1048.49USN-4945-1

linux-image-azureUbuntu

Fixed in:5.4.0.1047.26USN-4945-1

Fixed in:5.4.0.1047.45USN-4945-1

linux-image-gcpUbuntu

Fixed in:5.4.0.1043.30USN-4945-1

Fixed in:5.4.0.1043.52USN-4945-1

linux-image-genericUbuntu

Fixed in:5.4.0.73.76USN-4945-1

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

Fixed in:5.8.0.53.60~20.04.37USN-4949-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

linux-image-generic-hwe-20.04Ubuntu

Fixed in:5.8.0.53.60~20.04.37USN-4949-1

linux-image-generic-lpaeUbuntu

Fixed in:5.4.0.73.76USN-4945-1

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

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

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

Fixed in:5.8.0.53.60~20.04.37USN-4949-1

linux-image-gkeUbuntu

Fixed in:5.4.0.1043.52USN-4945-1

linux-image-gke-5.4Ubuntu

Fixed in:5.4.0.1043.45~18.04.9USN-4945-1

Fixed in:5.4.0.1043.52USN-4945-1

linux-image-gkeopUbuntu

Fixed in:5.4.0.1015.18USN-4945-1

linux-image-gkeop-5.4Ubuntu

Fixed in:5.4.0.1015.16~18.04.16USN-4945-1

Fixed in:5.4.0.1015.18USN-4945-1

linux-image-kvmUbuntu

Fixed in:5.4.0.1039.37USN-4945-1

linux-image-lowlatencyUbuntu

Fixed in:5.4.0.73.76USN-4945-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

linux-image-lowlatency-hwe-20.04Ubuntu

Fixed in:5.8.0.53.60~20.04.37USN-4949-1

linux-image-oemUbuntu

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

Fixed in:5.4.0.73.76USN-4945-1

linux-image-oem-20.04Ubuntu

Fixed in:5.6.0.1056.52USN-4947-1

linux-image-oem-20.04bUbuntu

Fixed in:5.10.0.1021.22USN-4911-1

linux-image-oem-osp1Ubuntu

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

Fixed in:5.4.0.73.76USN-4945-1

linux-image-oracleUbuntu

Fixed in:5.4.0.1044.47~18.04.26USN-4945-1

Fixed in:5.4.0.1045.44USN-4945-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1035.70USN-4945-2

linux-image-raspi-hwe-18.04Ubuntu

Fixed in:5.4.0.1035.37USN-4945-2

linux-image-raspi2Ubuntu

Fixed in:5.4.0.1035.70USN-4945-2

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

linux-image-virtualUbuntu

Fixed in:5.4.0.73.76USN-4945-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

linux-image-virtual-hwe-20.04Ubuntu

Fixed in:5.8.0.53.60~20.04.37USN-4949-1

linux-kvmUbuntu

Fixed in:5.4.0-1039.40USN-4945-1

linux-oem-5.10Ubuntu

Fixed in:5.10.0-1021.22USN-4911-1

linux-oem-5.6Ubuntu

Fixed in:5.6.0-1056.60USN-4947-1

linux-oracleUbuntu

Fixed in:5.4.0-1045.49USN-4945-1

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1044.47~18.04.1USN-4945-1

linux-raspiUbuntu

Fixed in:5.4.0-1035.38USN-4945-2

linux-raspi-5.4Ubuntu

Fixed in:5.4.0-1035.38~18.04.1USN-4945-2

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

0.30%probability of exploitation in 30 days

22ndpercentile

Low risk: more likely to be exploited than 22% of all known CVEs.

References

Patch1

git.kernel.org

Third-Party Advisory1

security.netapp.com

Other references4

Related Vulnerabilities

Other CWE-862 (Missing Authorization) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-39226	Critical	9.8	100%	KEV	Fix
CVE-2022-0543	Critical	10.0	100%	KEV	Fix
CVE-2021-21978	Critical	9.8	99%	-	Fix
CVE-2023-52163	High	8.8	96%	KEV	-
CVE-2022-1329	High	8.8	93%	-	-
CVE-2023-6875	Critical	9.8	90%	-	-

Embed a live status badge for CVE-2021-28375

Markdown

[![CVE-2021-28375](https://tridentstack.com/cve/badge/CVE-2021-28375.svg)](https://tridentstack.com/cve/CVE-2021-28375)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-28375"><img src="https://tridentstack.com/cve/badge/CVE-2021-28375.svg" alt="CVE-2021-28375"></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.