Is CVE-2021-28972 in the CISA KEV catalog?

No. CVE-2021-28972 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28972?

CVE-2021-28972 has a CVSS v3 base score of 6.7 (MEDIUM).

What is the EPSS score for CVE-2021-28972?

CVE-2021-28972 has an EPSS score of 0.86% (54th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28972?

Upgrade linux on debian 11 to 5.10.26-1 or later. Fixes are available for 104 affected products.

CVE & CISA-KEV Catalog

CVE-2021-28972

MEDIUM

6.7

CVSS v3

NVD

Description

In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.26-1CVE-2021-28972

linuxUbuntu

Fixed in:4.4.0-222.255USN-5343-1

Fixed in:4.4.0-219.252USN-5299-1

Fixed in:4.15.0-144.148USN-4979-1

Fixed in:5.4.0-74.83USN-4982-1

linux-awsUbuntu

Fixed in:4.4.0-1102.107USN-5343-1

Fixed in:4.4.0-1099.104USN-5299-1

Fixed in:4.4.0-1135.149USN-5299-1

Fixed in:4.4.0-1138.152USN-5343-1

Fixed in:4.15.0-1103.110USN-4979-1

Fixed in:5.4.0-1049.51USN-4982-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1049.51~18.04.1USN-4982-1

linux-aws-hweUbuntu

Fixed in:4.15.0-1103.110~16.04.1USN-4979-1

linux-azureUbuntu

Fixed in:4.15.0-1115.128~14.04.1USN-4979-1

Fixed in:4.15.0-1115.128~16.04.1USN-4979-1

Fixed in:5.4.0-1048.50USN-4982-1

linux-azure-4.15Ubuntu

Fixed in:4.15.0-1115.128USN-4979-1

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1048.50~18.04.1USN-4982-1

linux-gcpUbuntu

Fixed in:4.15.0-1100.113~16.04.1USN-4979-1

Fixed in:5.4.0-1044.47USN-4982-1

linux-gcp-4.15Ubuntu

Fixed in:4.15.0-1100.113USN-4979-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1044.47~18.04.2USN-4982-1

linux-gkeUbuntu

Fixed in:5.4.0-1044.46USN-4982-1

linux-gke-5.4Ubuntu

Fixed in:5.4.0-1044.46~18.04.1USN-4982-1

linux-gkeopUbuntu

Fixed in:5.4.0-1016.17USN-4982-1

linux-gkeop-5.4Ubuntu

Fixed in:5.4.0-1016.17~18.04.1USN-4982-1

linux-hweUbuntu

Fixed in:4.15.0-144.148~16.04.1USN-4979-1

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-74.83~18.04.1USN-4982-1

linux-hwe-5.8Ubuntu

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

linux-image-4.15.0-1072-oracleUbuntu

Fixed in:4.15.0-1072.80~16.04.1USN-4979-1

Fixed in:4.15.0-1072.80USN-4979-1

linux-image-4.15.0-1086-raspi2Ubuntu

Fixed in:4.15.0-1086.91USN-4979-1

linux-image-4.15.0-1092-kvmUbuntu

Fixed in:4.15.0-1092.94USN-4979-1

linux-image-4.15.0-1100-gcpUbuntu

Fixed in:4.15.0-1100.113~16.04.1USN-4979-1

Fixed in:4.15.0-1100.113USN-4979-1

linux-image-4.15.0-1103-awsUbuntu

Fixed in:4.15.0-1103.110~16.04.1USN-4979-1

Fixed in:4.15.0-1103.110USN-4979-1

linux-image-4.15.0-1103-snapdragonUbuntu

Fixed in:4.15.0-1103.112USN-4979-1

linux-image-4.15.0-1115-azureUbuntu

Fixed in:4.15.0-1115.128~14.04.1USN-4979-1

Fixed in:4.15.0-1115.128~16.04.1USN-4979-1

Fixed in:4.15.0-1115.128USN-4979-1

linux-image-4.15.0-144-genericUbuntu

Fixed in:4.15.0-144.148~16.04.1USN-4979-1

Fixed in:4.15.0-144.148USN-4979-1

linux-image-4.15.0-144-generic-lpaeUbuntu

Fixed in:4.15.0-144.148USN-4979-1

linux-image-4.15.0-144-lowlatencyUbuntu

Fixed in:4.15.0-144.148~16.04.1USN-4979-1

Fixed in:4.15.0-144.148USN-4979-1

linux-image-4.4.0-1099-awsUbuntu

Fixed in:4.4.0-1099.104USN-5299-1

linux-image-4.4.0-1100-kvmUbuntu

Fixed in:4.4.0-1100.109USN-5299-1

linux-image-4.4.0-1102-awsUbuntu

Fixed in:4.4.0-1102.107USN-5343-1

linux-image-4.4.0-1103-kvmUbuntu

Fixed in:4.4.0-1103.112USN-5343-1

linux-image-4.4.0-1135-awsUbuntu

Fixed in:4.4.0-1135.149USN-5299-1

linux-image-4.4.0-1138-awsUbuntu

Fixed in:4.4.0-1138.152USN-5343-1

linux-image-4.4.0-219-genericUbuntu

Fixed in:4.4.0-219.252~14.04.1USN-5299-1

Fixed in:4.4.0-219.252USN-5299-1

linux-image-4.4.0-219-lowlatencyUbuntu

Fixed in:4.4.0-219.252~14.04.1USN-5299-1

Fixed in:4.4.0-219.252USN-5299-1

linux-image-4.4.0-222-genericUbuntu

Fixed in:4.4.0-222.255~14.04.1USN-5343-1

Fixed in:4.4.0-222.255USN-5343-1

linux-image-4.4.0-222-lowlatencyUbuntu

Fixed in:4.4.0-222.255~14.04.1USN-5343-1

Fixed in:4.4.0-222.255USN-5343-1

linux-image-5.10.0-1026-oemUbuntu

Fixed in:5.10.0-1026.27USN-4948-1

linux-image-5.4.0-1016-gkeopUbuntu

Fixed in:5.4.0-1016.17~18.04.1USN-4982-1

Fixed in:5.4.0-1016.17USN-4982-1

linux-image-5.4.0-1036-raspiUbuntu

Fixed in:5.4.0-1036.39~18.04.1USN-4982-1

Fixed in:5.4.0-1036.39USN-4982-1

linux-image-5.4.0-1040-kvmUbuntu

Fixed in:5.4.0-1040.41USN-4982-1

linux-image-5.4.0-1044-gcpUbuntu

Fixed in:5.4.0-1044.47~18.04.2USN-4982-1

Fixed in:5.4.0-1044.47USN-4982-1

linux-image-5.4.0-1044-gkeUbuntu

Fixed in:5.4.0-1044.46~18.04.1USN-4982-1

Fixed in:5.4.0-1044.46USN-4982-1

linux-image-5.4.0-1046-oracleUbuntu

Fixed in:5.4.0-1046.50~18.04.2USN-4982-1

Fixed in:5.4.0-1046.50USN-4982-1

linux-image-5.4.0-1048-azureUbuntu

Fixed in:5.4.0-1048.50~18.04.1USN-4982-1

Fixed in:5.4.0-1048.50USN-4982-1

linux-image-5.4.0-1049-awsUbuntu

Fixed in:5.4.0-1049.51~18.04.1USN-4982-1

Fixed in:5.4.0-1049.51USN-4982-1

linux-image-5.4.0-74-genericUbuntu

Fixed in:5.4.0-74.83~18.04.1USN-4982-1

Fixed in:5.4.0-74.83USN-4982-1

linux-image-5.4.0-74-generic-lpaeUbuntu

Fixed in:5.4.0-74.83~18.04.1USN-4982-1

Fixed in:5.4.0-74.83USN-4982-1

linux-image-5.4.0-74-lowlatencyUbuntu

Fixed in:5.4.0-74.83~18.04.1USN-4982-1

Fixed in:5.4.0-74.83USN-4982-1

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:4.4.0.1099.97USN-5299-1

Fixed in:4.4.0.1102.100USN-5343-1

Fixed in:4.4.0.1135.140USN-5299-1

Fixed in:4.4.0.1138.143USN-5343-1

Fixed in:5.4.0.1049.31USN-4982-1

Fixed in:5.4.0.1049.50USN-4982-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1103.94USN-4979-1

linux-image-aws-lts-18.04Ubuntu

Fixed in:4.15.0.1103.106USN-4979-1

linux-image-azureUbuntu

Fixed in:4.15.0.1115.88USN-4979-1

Fixed in:4.15.0.1115.106USN-4979-1

Fixed in:5.4.0.1048.27USN-4982-1

Fixed in:5.4.0.1048.46USN-4982-1

linux-image-azure-lts-18.04Ubuntu

Fixed in:4.15.0.1115.88USN-4979-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1100.101USN-4979-1

Fixed in:5.4.0.1044.31USN-4982-1

Fixed in:5.4.0.1044.53USN-4982-1

linux-image-gcp-lts-18.04Ubuntu

Fixed in:4.15.0.1100.118USN-4979-1

linux-image-genericUbuntu

Fixed in:4.4.0.222.229USN-5343-1

Fixed in:4.4.0.219.226USN-5299-1

Fixed in:4.15.0.144.131USN-4979-1

Fixed in:5.4.0.74.77USN-4982-1

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:4.15.0.144.140USN-4979-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.74.83~18.04.67USN-4982-1

linux-image-generic-hwe-20.04Ubuntu

Fixed in:5.8.0.55.62~20.04.39USN-4984-1

linux-image-generic-lpaeUbuntu

Fixed in:4.15.0.144.131USN-4979-1

Fixed in:5.4.0.74.77USN-4982-1

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

Fixed in:5.4.0.74.83~18.04.67USN-4982-1

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

Fixed in:5.8.0.55.62~20.04.39USN-4984-1

linux-image-generic-lts-xenialUbuntu

Fixed in:4.4.0.222.193USN-5343-1

Fixed in:4.4.0.219.190USN-5299-1

linux-image-gkeUbuntu

Fixed in:4.15.0.1100.101USN-4979-1

Fixed in:5.4.0.1044.53USN-4982-1

linux-image-gke-5.4Ubuntu

Fixed in:5.4.0.1044.46~18.04.10USN-4982-1

Fixed in:5.4.0.1044.53USN-4982-1

linux-image-gkeopUbuntu

Fixed in:5.4.0.1016.19USN-4982-1

linux-image-gkeop-5.4Ubuntu

Fixed in:5.4.0.1016.17~18.04.17USN-4982-1

Fixed in:5.4.0.1016.19USN-4982-1

linux-image-kvmUbuntu

Fixed in:4.4.0.1103.101USN-5343-1

Fixed in:4.4.0.1100.98USN-5299-1

Fixed in:4.15.0.1092.88USN-4979-1

Fixed in:5.4.0.1040.38USN-4982-1

linux-image-lowlatencyUbuntu

Fixed in:4.4.0.219.226USN-5299-1

Fixed in:4.4.0.222.229USN-5343-1

Fixed in:4.15.0.144.131USN-4979-1

Fixed in:5.4.0.74.77USN-4982-1

linux-image-lowlatency-hwe-16.04Ubuntu

Fixed in:4.15.0.144.140USN-4979-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.74.83~18.04.67USN-4982-1

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:4.4.0.222.193USN-5343-1

Fixed in:4.4.0.219.190USN-5299-1

linux-image-oemUbuntu

Fixed in:4.15.0.144.140USN-4979-1

Fixed in:5.4.0.74.83~18.04.67USN-4982-1

Fixed in:5.4.0.74.77USN-4982-1

linux-image-oem-20.04bUbuntu

Fixed in:5.10.0.1026.27USN-4948-1

linux-image-oem-osp1Ubuntu

Fixed in:5.4.0.74.83~18.04.67USN-4982-1

Fixed in:5.4.0.74.77USN-4982-1

linux-image-oracleUbuntu

Fixed in:4.15.0.1072.60USN-4979-1

Fixed in:5.4.0.1046.50~18.04.28USN-4982-1

Fixed in:5.4.0.1046.45USN-4982-1

linux-image-oracle-lts-18.04Ubuntu

Fixed in:4.15.0.1072.82USN-4979-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1036.71USN-4982-1

linux-image-raspi-hwe-18.04Ubuntu

Fixed in:5.4.0.1036.38USN-4982-1

linux-image-raspi2Ubuntu

Fixed in:4.15.0.1086.83USN-4979-1

Fixed in:5.4.0.1036.71USN-4982-1

linux-image-snapdragonUbuntu

Fixed in:4.15.0.1103.106USN-4979-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.74.83~18.04.67USN-4982-1

linux-image-virtualUbuntu

Fixed in:4.4.0.219.226USN-5299-1

Fixed in:4.4.0.222.229USN-5343-1

Fixed in:4.15.0.144.131USN-4979-1

Fixed in:5.4.0.74.77USN-4982-1

linux-image-virtual-hwe-16.04Ubuntu

Fixed in:4.15.0.144.140USN-4979-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.74.83~18.04.67USN-4982-1

Fixed in:5.4.0.74.77USN-4982-1

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:4.4.0.222.193USN-5343-1

Fixed in:4.4.0.219.190USN-5299-1

linux-kvmUbuntu

Fixed in:4.4.0-1100.109USN-5299-1

Fixed in:4.4.0-1103.112USN-5343-1

Fixed in:4.15.0-1092.94USN-4979-1

Fixed in:5.4.0-1040.41USN-4982-1

linux-lts-xenialUbuntu

Fixed in:4.4.0-219.252~14.04.1USN-5299-1

Fixed in:4.4.0-222.255~14.04.1USN-5343-1

linux-oem-5.10Ubuntu

Fixed in:5.10.0-1026.27USN-4948-1

linux-oracleUbuntu

Fixed in:4.15.0-1072.80~16.04.1USN-4979-1

Fixed in:4.15.0-1072.80USN-4979-1

Fixed in:5.4.0-1046.50USN-4982-1

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1046.50~18.04.2USN-4982-1

linux-raspiUbuntu

Fixed in:5.4.0-1036.39USN-4982-1

linux-raspi-5.4Ubuntu

Fixed in:5.4.0-1036.39~18.04.1USN-4982-1

linux-raspi2Ubuntu

Fixed in:4.15.0-1086.91USN-4979-1

linux-snapdragonUbuntu

Fixed in:4.15.0-1103.112USN-4979-1

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 RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.86%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Patch1

git.kernel.org

Third-Party Advisory1

security.netapp.com

Other references3

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	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.