Is CVE-2021-47063 in the CISA KEV catalog?

No. CVE-2021-47063 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-47063?

CVE-2021-47063 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-47063?

CVE-2021-47063 has an EPSS score of 0.26% (17th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-47063?

Upgrade linux on debian 11 to 5.10.38-1 or later. Fixes are available for 77 affected products.

CVE & CISA-KEV Catalog

CVE-2021-47063

HIGH

7.8

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: drm: bridge/panel: Cleanup connector on bridge detach If we don't call drm_connector_cleanup() manually in panel_bridge_detach(), the connector will be cleaned up with the other DRM objects in the call to drm_mode_config_cleanup(). However, since our drm_connector is devm-allocated, by the time drm_mode_config_cleanup() will be called, our connector will be long gone. Therefore, the connector must be cleaned up when the bridge is detached to avoid use-after-free conditions. v2: Cleanup connector only if it was created v3: Add FIXME v4: (Use connector->dev) directly in if() block

CWE-416Use After Free

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.38-1CVE-2021-47063

linuxUbuntu

Fixed in:4.15.0-226.238USN-6866-1

Fixed in:5.4.0-186.206USN-6831-1

linux-awsUbuntu

Fixed in:4.15.0-1169.182USN-6866-1

Fixed in:5.4.0-1126.136USN-6831-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1126.136~18.04.1USN-6831-1

linux-aws-hweUbuntu

Fixed in:4.15.0-1169.182~16.04.1USN-6866-1

linux-azureUbuntu

Fixed in:4.15.0-1178.193~14.04.1USN-6866-3

Fixed in:4.15.0-1178.193~16.04.1USN-6866-2

Fixed in:5.4.0-1131.138USN-6831-1

linux-azure-4.15Ubuntu

Fixed in:4.15.0-1178.193USN-6866-2

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1131.138~18.04.1USN-6831-1

linux-gcpUbuntu

Fixed in:4.15.0-1163.180~16.04.1USN-6866-1

Fixed in:5.4.0-1130.139USN-6831-1

linux-gcp-4.15Ubuntu

Fixed in:4.15.0-1163.180USN-6866-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1130.139~18.04.1USN-6831-1

linux-gkeopUbuntu

Fixed in:5.4.0-1093.97USN-6831-1

linux-hweUbuntu

Fixed in:4.15.0-226.238~16.04.1USN-6866-1

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-186.206~18.04.1USN-6831-1

linux-ibmUbuntu

Fixed in:5.4.0-1073.78USN-6831-1

linux-ibm-5.4Ubuntu

Fixed in:5.4.0-1073.78~18.04.1USN-6831-1

linux-image-4.15.0-1132-oracleUbuntu

Fixed in:4.15.0-1132.143~16.04.1USN-6866-1

Fixed in:4.15.0-1132.143USN-6866-1

linux-image-4.15.0-1153-kvmUbuntu

Fixed in:4.15.0-1153.158USN-6866-1

linux-image-4.15.0-1163-gcpUbuntu

Fixed in:4.15.0-1163.180~16.04.1USN-6866-1

Fixed in:4.15.0-1163.180USN-6866-1

linux-image-4.15.0-1169-awsUbuntu

Fixed in:4.15.0-1169.182~16.04.1USN-6866-1

Fixed in:4.15.0-1169.182USN-6866-1

linux-image-4.15.0-1178-azureUbuntu

Fixed in:4.15.0-1178.193~14.04.1USN-6866-3

Fixed in:4.15.0-1178.193~16.04.1USN-6866-2

Fixed in:4.15.0-1178.193USN-6866-2

linux-image-4.15.0-226-genericUbuntu

Fixed in:4.15.0-226.238~16.04.1USN-6866-1

Fixed in:4.15.0-226.238USN-6866-1

linux-image-4.15.0-226-lowlatencyUbuntu

Fixed in:4.15.0-226.238~16.04.1USN-6866-1

Fixed in:4.15.0-226.238USN-6866-1

linux-image-5.4.0-1045-xilinx-zynqmpUbuntu

Fixed in:5.4.0-1045.49USN-6831-1

linux-image-5.4.0-1073-ibmUbuntu

Fixed in:5.4.0-1073.78~18.04.1USN-6831-1

Fixed in:5.4.0-1073.78USN-6831-1

linux-image-5.4.0-1093-gkeopUbuntu

Fixed in:5.4.0-1093.97USN-6831-1

linux-image-5.4.0-1110-raspiUbuntu

Fixed in:5.4.0-1110.122~18.04.1USN-6831-1

Fixed in:5.4.0-1110.122USN-6831-1

linux-image-5.4.0-1114-kvmUbuntu

Fixed in:5.4.0-1114.121USN-6831-1

linux-image-5.4.0-1125-oracleUbuntu

Fixed in:5.4.0-1125.134~18.04.1USN-6831-1

Fixed in:5.4.0-1125.134USN-6831-1

linux-image-5.4.0-1126-awsUbuntu

Fixed in:5.4.0-1126.136~18.04.1USN-6831-1

Fixed in:5.4.0-1126.136USN-6831-1

linux-image-5.4.0-1130-gcpUbuntu

Fixed in:5.4.0-1130.139~18.04.1USN-6831-1

Fixed in:5.4.0-1130.139USN-6831-1

linux-image-5.4.0-1131-azureUbuntu

Fixed in:5.4.0-1131.138~18.04.1USN-6831-1

Fixed in:5.4.0-1131.138USN-6831-1

linux-image-5.4.0-186-genericUbuntu

Fixed in:5.4.0-186.206~18.04.1USN-6831-1

Fixed in:5.4.0-186.206USN-6831-1

linux-image-5.4.0-186-generic-lpaeUbuntu

Fixed in:5.4.0-186.206USN-6831-1

linux-image-5.4.0-186-lowlatencyUbuntu

Fixed in:5.4.0-186.206~18.04.1USN-6831-1

Fixed in:5.4.0-186.206USN-6831-1

linux-image-awsUbuntu

Fixed in:5.4.0.1126.136~18.04.1USN-6831-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1169.182~16.04.1USN-6866-1

linux-image-aws-lts-18.04Ubuntu

Fixed in:4.15.0.1169.167USN-6866-1

linux-image-aws-lts-20.04Ubuntu

Fixed in:5.4.0.1126.123USN-6831-1

linux-image-azureUbuntu

Fixed in:4.15.0.1178.193~14.04.1USN-6866-3

Fixed in:4.15.0.1178.193~16.04.1USN-6866-2

Fixed in:5.4.0.1131.138~18.04.1USN-6831-1

linux-image-azure-lts-18.04Ubuntu

Fixed in:4.15.0.1178.146USN-6866-2

linux-image-azure-lts-20.04Ubuntu

Fixed in:5.4.0.1131.125USN-6831-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1163.180~16.04.1USN-6866-1

Fixed in:5.4.0.1130.139~18.04.1USN-6831-1

linux-image-gcp-lts-18.04Ubuntu

Fixed in:4.15.0.1163.176USN-6866-1

linux-image-gcp-lts-20.04Ubuntu

Fixed in:5.4.0.1130.132USN-6831-1

linux-image-genericUbuntu

Fixed in:4.15.0.226.210USN-6866-1

Fixed in:5.4.0.186.184USN-6831-1

linux-image-generic-hwe-16.04Ubuntu

Fixed in:4.15.0.226.238~16.04.1USN-6866-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

linux-image-generic-lpaeUbuntu

Fixed in:5.4.0.186.184USN-6831-1

linux-image-gkeUbuntu

Fixed in:4.15.0.1163.180~16.04.1USN-6866-1

linux-image-gkeopUbuntu

Fixed in:5.4.0.1093.91USN-6831-1

linux-image-gkeop-5.4Ubuntu

Fixed in:5.4.0.1093.91USN-6831-1

linux-image-ibmUbuntu

Fixed in:5.4.0.1073.78~18.04.1USN-6831-1

linux-image-ibm-lts-20.04Ubuntu

Fixed in:5.4.0.1073.102USN-6831-1

linux-image-kvmUbuntu

Fixed in:4.15.0.1153.144USN-6866-1

Fixed in:5.4.0.1114.110USN-6831-1

linux-image-lowlatencyUbuntu

Fixed in:4.15.0.226.210USN-6866-1

Fixed in:5.4.0.186.184USN-6831-1

linux-image-lowlatency-hwe-16.04Ubuntu

Fixed in:4.15.0.226.238~16.04.1USN-6866-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

linux-image-oemUbuntu

Fixed in:4.15.0.226.238~16.04.1USN-6866-1

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

Fixed in:5.4.0.186.184USN-6831-1

linux-image-oem-osp1Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

Fixed in:5.4.0.186.184USN-6831-1

linux-image-oracleUbuntu

Fixed in:4.15.0.1132.143~16.04.1USN-6866-1

Fixed in:5.4.0.1125.134~18.04.1USN-6831-1

linux-image-oracle-lts-18.04Ubuntu

Fixed in:4.15.0.1132.137USN-6866-1

linux-image-oracle-lts-20.04Ubuntu

Fixed in:5.4.0.1125.118USN-6831-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1110.140USN-6831-1

linux-image-raspi-hwe-18.04Ubuntu

Fixed in:5.4.0.1110.122~18.04.1USN-6831-1

linux-image-raspi2Ubuntu

Fixed in:5.4.0.1110.140USN-6831-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

linux-image-virtualUbuntu

Fixed in:4.15.0.226.210USN-6866-1

Fixed in:5.4.0.186.184USN-6831-1

linux-image-virtual-hwe-16.04Ubuntu

Fixed in:4.15.0.226.238~16.04.1USN-6866-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

linux-image-xilinx-zynqmpUbuntu

Fixed in:5.4.0.1045.45USN-6831-1

linux-kvmUbuntu

Fixed in:4.15.0-1153.158USN-6866-1

Fixed in:5.4.0-1114.121USN-6831-1

linux-oracleUbuntu

Fixed in:4.15.0-1132.143~16.04.1USN-6866-1

Fixed in:4.15.0-1132.143USN-6866-1

Fixed in:5.4.0-1125.134USN-6831-1

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1125.134~18.04.1USN-6831-1

linux-raspiUbuntu

Fixed in:5.4.0-1110.122USN-6831-1

linux-raspi-5.4Ubuntu

Fixed in:5.4.0-1110.122~18.04.1USN-6831-1

linux-xilinx-zynqmpUbuntu

Fixed in:5.4.0-1045.49USN-6831-1

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

0.26%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Patch4

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	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 2024-12-10.