Is CVE-2021-28038 in the CISA KEV catalog?

No. CVE-2021-28038 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28038?

CVE-2021-28038 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-28038?

CVE-2021-28038 has an EPSS score of 0.71% (49th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28038?

Upgrade linux on debian 11 to 5.10.24-1 or later. Fixes are available for 115 affected products.

CVE & CISA-KEV Catalog

CVE-2021-28038

MEDIUM

6.5

CVSS v3

NVD

Description

An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.

CWE-770Allocation of Resources Without Limits or Throttling

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.24-1CVE-2021-28038

linuxUbuntu

Fixed in:4.4.0-208.240USN-4904-1

Fixed in:4.15.0-143.147USN-4946-1

Fixed in:5.4.0-73.82USN-4945-1

linux-awsUbuntu

Fixed in:4.4.0-1090.94USN-4904-1

Fixed in:4.4.0-1126.140USN-4904-1

Fixed in:4.15.0-1102.109USN-4946-1

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-aws-hweUbuntu

Fixed in:4.15.0-1102.109~16.04.1USN-4946-1

linux-azureUbuntu

Fixed in:4.15.0-1114.127~14.04.1USN-4946-1

Fixed in:5.4.0-1047.49USN-4945-1

linux-azure-4.15Ubuntu

Fixed in:4.15.0-1114.127USN-4946-1

linux-azure-5.4Ubuntu

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

linux-dell300xUbuntu

Fixed in:4.15.0-1018.22USN-4946-1

linux-gcpUbuntu

Fixed in:4.15.0-1099.112~16.04.1USN-4946-1

Fixed in:5.4.0-1043.46USN-4945-1

linux-gcp-4.15Ubuntu

Fixed in:4.15.0-1099.112USN-4946-1

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-hweUbuntu

Fixed in:4.15.0-143.147~16.04.3USN-4946-1

linux-hwe-5.4Ubuntu

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

linux-hwe-5.8Ubuntu

Fixed in:5.8.0-55.62~20.04.1USN-4984-1

linux-image-4.15.0-1018-dell300xUbuntu

Fixed in:4.15.0-1018.22USN-4946-1

linux-image-4.15.0-1071-oracleUbuntu

Fixed in:4.15.0-1071.79~16.04.1USN-4946-1

Fixed in:4.15.0-1071.79USN-4946-1

linux-image-4.15.0-1085-raspi2Ubuntu

Fixed in:4.15.0-1085.90USN-4946-1

linux-image-4.15.0-1091-kvmUbuntu

Fixed in:4.15.0-1091.93USN-4946-1

linux-image-4.15.0-1099-gcpUbuntu

Fixed in:4.15.0-1099.112~16.04.1USN-4946-1

Fixed in:4.15.0-1099.112USN-4946-1

linux-image-4.15.0-1102-awsUbuntu

Fixed in:4.15.0-1102.109~16.04.1USN-4946-1

Fixed in:4.15.0-1102.109USN-4946-1

linux-image-4.15.0-1102-snapdragonUbuntu

Fixed in:4.15.0-1102.111USN-4946-1

linux-image-4.15.0-1114-azureUbuntu

Fixed in:4.15.0-1114.127~14.04.1USN-4946-1

Fixed in:4.15.0-1114.127USN-4946-1

linux-image-4.15.0-143-genericUbuntu

Fixed in:4.15.0-143.147~16.04.3USN-4946-1

Fixed in:4.15.0-143.147USN-4946-1

linux-image-4.15.0-143-generic-lpaeUbuntu

Fixed in:4.15.0-143.147USN-4946-1

linux-image-4.15.0-143-lowlatencyUbuntu

Fixed in:4.15.0-143.147~16.04.3USN-4946-1

Fixed in:4.15.0-143.147USN-4946-1

linux-image-4.4.0-1090-awsUbuntu

Fixed in:4.4.0-1090.94USN-4904-1

linux-image-4.4.0-1091-kvmUbuntu

Fixed in:4.4.0-1091.100USN-4904-1

linux-image-4.4.0-1126-awsUbuntu

Fixed in:4.4.0-1126.140USN-4904-1

linux-image-4.4.0-1150-raspi2Ubuntu

Fixed in:4.4.0-1150.161USN-4904-1

linux-image-4.4.0-1154-snapdragonUbuntu

Fixed in:4.4.0-1154.164USN-4904-1

linux-image-4.4.0-208-genericUbuntu

Fixed in:4.4.0-208.240~14.04.1USN-4904-1

Fixed in:4.4.0-208.240USN-4904-1

linux-image-4.4.0-208-generic-lpaeUbuntu

Fixed in:4.4.0-208.240~14.04.1USN-4904-1

Fixed in:4.4.0-208.240USN-4904-1

linux-image-4.4.0-208-lowlatencyUbuntu

Fixed in:4.4.0-208.240~14.04.1USN-4904-1

Fixed in:4.4.0-208.240USN-4904-1

linux-image-4.4.0-208-powerpc-e500mcUbuntu

Fixed in:4.4.0-208.240USN-4904-1

linux-image-4.4.0-208-powerpc-smpUbuntu

Fixed in:4.4.0-208.240USN-4904-1

linux-image-4.4.0-208-powerpc64-embUbuntu

Fixed in:4.4.0-208.240USN-4904-1

linux-image-4.4.0-208-powerpc64-smpUbuntu

Fixed in:4.4.0-208.240USN-4904-1

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-5.8.0-55-genericUbuntu

Fixed in:5.8.0-55.62~20.04.1USN-4984-1

linux-image-5.8.0-55-generic-64kUbuntu

Fixed in:5.8.0-55.62~20.04.1USN-4984-1

linux-image-5.8.0-55-generic-lpaeUbuntu

Fixed in:5.8.0-55.62~20.04.1USN-4984-1

linux-image-5.8.0-55-lowlatencyUbuntu

Fixed in:5.8.0-55.62~20.04.1USN-4984-1

linux-image-awsUbuntu

Fixed in:4.4.0.1090.87USN-4904-1

Fixed in:4.4.0.1126.131USN-4904-1

Fixed in:5.4.0.1048.30USN-4945-1

Fixed in:5.4.0.1048.49USN-4945-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1102.93USN-4946-1

linux-image-aws-lts-18.04Ubuntu

Fixed in:4.15.0.1102.105USN-4946-1

linux-image-azureUbuntu

Fixed in:4.15.0.1114.87USN-4946-1

Fixed in:5.4.0.1047.26USN-4945-1

Fixed in:5.4.0.1047.45USN-4945-1

linux-image-azure-lts-18.04Ubuntu

Fixed in:4.15.0.1114.87USN-4946-1

linux-image-dell300xUbuntu

Fixed in:4.15.0.1018.20USN-4946-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1099.100USN-4946-1

Fixed in:5.4.0.1043.30USN-4945-1

Fixed in:5.4.0.1043.52USN-4945-1

linux-image-gcp-lts-18.04Ubuntu

Fixed in:4.15.0.1099.117USN-4946-1

linux-image-genericUbuntu

Fixed in:4.4.0.208.214USN-4904-1

Fixed in:4.15.0.143.130USN-4946-1

Fixed in:5.4.0.73.76USN-4945-1

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

Fixed in:5.8.0.55.62~20.04.39USN-4984-1

linux-image-generic-hwe-16.04Ubuntu

Fixed in:4.15.0.143.139USN-4946-1

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:5.8.0.55.62~20.04.39USN-4984-1

linux-image-generic-lpaeUbuntu

Fixed in:4.4.0.208.214USN-4904-1

Fixed in:4.15.0.143.130USN-4946-1

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:5.8.0.55.62~20.04.39USN-4984-1

linux-image-generic-lpae-lts-xenialUbuntu

Fixed in:4.4.0.208.181USN-4904-1

linux-image-generic-lts-xenialUbuntu

Fixed in:4.4.0.208.181USN-4904-1

linux-image-gkeUbuntu

Fixed in:4.15.0.1099.100USN-4946-1

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:4.4.0.1091.89USN-4904-1

Fixed in:4.15.0.1091.87USN-4946-1

Fixed in:5.4.0.1039.37USN-4945-1

linux-image-lowlatencyUbuntu

Fixed in:4.4.0.208.214USN-4904-1

Fixed in:4.15.0.143.130USN-4946-1

Fixed in:5.4.0.73.76USN-4945-1

linux-image-lowlatency-hwe-16.04Ubuntu

Fixed in:4.15.0.143.139USN-4946-1

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:5.8.0.55.62~20.04.39USN-4984-1

linux-image-lowlatency-lts-xenialUbuntu

Fixed in:4.4.0.208.181USN-4904-1

linux-image-oemUbuntu

Fixed in:4.15.0.143.139USN-4946-1

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

Fixed in:5.4.0.73.76USN-4945-1

linux-image-oem-20.04bUbuntu

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:4.15.0.1071.59USN-4946-1

Fixed in:5.4.0.1044.47~18.04.26USN-4945-1

Fixed in:5.4.0.1045.44USN-4945-1

linux-image-oracle-lts-18.04Ubuntu

Fixed in:4.15.0.1071.81USN-4946-1

linux-image-powerpc-e500mcUbuntu

Fixed in:4.4.0.208.214USN-4904-1

linux-image-powerpc-smpUbuntu

Fixed in:4.4.0.208.214USN-4904-1

linux-image-powerpc64-embUbuntu

Fixed in:4.4.0.208.214USN-4904-1

linux-image-powerpc64-smpUbuntu

Fixed in:4.4.0.208.214USN-4904-1

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:4.4.0.1150.150USN-4904-1

Fixed in:4.15.0.1085.82USN-4946-1

Fixed in:5.4.0.1035.70USN-4945-2

linux-image-snapdragonUbuntu

Fixed in:4.4.0.1154.146USN-4904-1

Fixed in:4.15.0.1102.105USN-4946-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.73.82~18.04.66USN-4945-1

linux-image-virtualUbuntu

Fixed in:4.4.0.208.214USN-4904-1

Fixed in:4.15.0.143.130USN-4946-1

Fixed in:5.4.0.73.76USN-4945-1

linux-image-virtual-hwe-16.04Ubuntu

Fixed in:4.15.0.143.139USN-4946-1

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:5.8.0.55.62~20.04.39USN-4984-1

linux-image-virtual-lts-xenialUbuntu

Fixed in:4.4.0.208.181USN-4904-1

linux-kvmUbuntu

Fixed in:4.4.0-1091.100USN-4904-1

Fixed in:4.15.0-1091.93USN-4946-1

Fixed in:5.4.0-1039.40USN-4945-1

linux-lts-xenialUbuntu

Fixed in:4.4.0-208.240~14.04.1USN-4904-1

linux-oem-5.10Ubuntu

Fixed in:5.10.0-1021.22USN-4911-1

linux-oracleUbuntu

Fixed in:4.15.0-1071.79~16.04.1USN-4946-1

Fixed in:4.15.0-1071.79USN-4946-1

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

linux-raspi2Ubuntu

Fixed in:4.4.0-1150.161USN-4904-1

Fixed in:4.15.0-1085.90USN-4946-1

linux-snapdragonUbuntu

Fixed in:4.4.0-1154.164USN-4904-1

Fixed in:4.15.0-1102.111USN-4946-1

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

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.71%probability of exploitation in 30 days

49thpercentile

Moderate risk: more likely to be exploited than 49% of all known CVEs.

References

Patch2

Third-Party Advisory3

Other references1

git.kernel.org

Related Vulnerabilities

Other CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-50387	High	7.5	100%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2019-11479	High	7.5	92%	-	Fix
CVE-2024-27316	High	7.5	91%	-	Fix
CVE-2022-30522	High	7.5	90%	-	Fix
CVE-2019-9515	High	7.5	88%	-	Fix

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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.