Is CVE-2020-10766 in the CISA KEV catalog?

No. CVE-2020-10766 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-10766?

CVE-2020-10766 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2020-10766?

CVE-2020-10766 has an EPSS score of 0.46% (37th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-10766?

Upgrade linux on debian 11 to 5.7.6-1 or later. Fixes are available for 121 affected products.

CVE & CISA-KEV Catalog

CVE-2020-10766

MEDIUM

5.5

CVSS v3

NVD

Description

A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality.

CWE-440

How to fix

Remediation Available

linuxDebian

Fixed in:5.7.6-1CVE-2020-10766

linuxUbuntu

Fixed in:4.4.0-186.216USN-4427-1

Fixed in:4.15.0-115.116USN-4485-1

Fixed in:5.4.0-45.49USN-4483-1

linux-awsUbuntu

Fixed in:4.4.0-1075.79USN-4427-1

Fixed in:4.4.0-1111.123USN-4427-1

Fixed in:4.15.0-1080.84USN-4485-1

Fixed in:5.4.0-1022.22USN-4483-1

linux-aws-5.3Ubuntu

Fixed in:5.3.0-1032.34~18.04.2USN-4440-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1022.22~18.04.1USN-4483-1

linux-aws-hweUbuntu

Fixed in:4.15.0-1080.84~16.04.1USN-4485-1

linux-azureUbuntu

Fixed in:4.15.0-1093.103~14.04.1USN-4485-1

Fixed in:4.15.0-1093.103~16.04.1USN-4485-1

Fixed in:5.4.0-1023.23USN-4483-1

linux-azure-4.15Ubuntu

Fixed in:4.15.0-1093.103USN-4485-1

linux-azure-5.3Ubuntu

Fixed in:5.3.0-1034.35~18.04.1USN-4440-1

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1023.23~18.04.1USN-4483-1

linux-gcpUbuntu

Fixed in:4.15.0-1081.92~16.04.1USN-4485-1

Fixed in:5.4.0-1022.22USN-4483-1

linux-gcp-4.15Ubuntu

Fixed in:4.15.0-1081.92USN-4485-1

linux-gcp-5.3Ubuntu

Fixed in:5.3.0-1032.34~18.04.1USN-4440-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1022.22~18.04.1USN-4483-1

linux-gke-4.15Ubuntu

Fixed in:4.15.0-1067.70USN-4485-1

linux-gke-5.0Ubuntu

Fixed in:5.0.0-1045.46USN-4439-1

linux-gke-5.3Ubuntu

Fixed in:5.3.0-1032.34~18.04.1USN-4440-1

linux-hweUbuntu

Fixed in:4.15.0-115.116~16.04.1USN-4485-1

Fixed in:5.3.0-64.58~18.04.1USN-4440-1

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-45.49~18.04.2USN-4483-1

linux-image-4.15.0-1051-oracleUbuntu

Fixed in:4.15.0-1051.55~16.04.1USN-4485-1

Fixed in:4.15.0-1051.55USN-4485-1

linux-image-4.15.0-1067-gkeUbuntu

Fixed in:4.15.0-1067.70USN-4485-1

linux-image-4.15.0-1068-raspi2Ubuntu

Fixed in:4.15.0-1068.72USN-4485-1

linux-image-4.15.0-1072-kvmUbuntu

Fixed in:4.15.0-1072.73USN-4485-1

linux-image-4.15.0-1080-awsUbuntu

Fixed in:4.15.0-1080.84~16.04.1USN-4485-1

Fixed in:4.15.0-1080.84USN-4485-1

linux-image-4.15.0-1081-gcpUbuntu

Fixed in:4.15.0-1081.92~16.04.1USN-4485-1

Fixed in:4.15.0-1081.92USN-4485-1

linux-image-4.15.0-1084-snapdragonUbuntu

Fixed in:4.15.0-1084.92USN-4485-1

linux-image-4.15.0-1093-azureUbuntu

Fixed in:4.15.0-1093.103~14.04.1USN-4485-1

Fixed in:4.15.0-1093.103~16.04.1USN-4485-1

Fixed in:4.15.0-1093.103USN-4485-1

linux-image-4.15.0-1094-oemUbuntu

Fixed in:4.15.0-1094.104USN-4485-1

linux-image-4.15.0-115-genericUbuntu

Fixed in:4.15.0-115.116USN-4485-1

linux-image-4.15.0-115-generic-lpaeUbuntu

Fixed in:4.15.0-115.116USN-4485-1

linux-image-4.15.0-115-lowlatencyUbuntu

Fixed in:4.15.0-115.116USN-4485-1

linux-image-4.4.0-1075-awsUbuntu

Fixed in:4.4.0-1075.79USN-4427-1

linux-image-4.4.0-1077-kvmUbuntu

Fixed in:4.4.0-1077.84USN-4427-1

linux-image-4.4.0-1111-awsUbuntu

Fixed in:4.4.0-1111.123USN-4427-1

linux-image-4.4.0-1136-raspi2Ubuntu

Fixed in:4.4.0-1136.145USN-4427-1

linux-image-4.4.0-1140-snapdragonUbuntu

Fixed in:4.4.0-1140.148USN-4427-1

linux-image-4.4.0-186-genericUbuntu

Fixed in:4.4.0-186.216~14.04.1USN-4427-1

Fixed in:4.4.0-186.216USN-4427-1

linux-image-4.4.0-186-generic-lpaeUbuntu

Fixed in:4.4.0-186.216~14.04.1USN-4427-1

Fixed in:4.4.0-186.216USN-4427-1

linux-image-4.4.0-186-lowlatencyUbuntu

Fixed in:4.4.0-186.216~14.04.1USN-4427-1

Fixed in:4.4.0-186.216USN-4427-1

linux-image-4.4.0-186-powerpc-e500mcUbuntu

Fixed in:4.4.0-186.216~14.04.1USN-4427-1

Fixed in:4.4.0-186.216USN-4427-1

linux-image-4.4.0-186-powerpc-smpUbuntu

Fixed in:4.4.0-186.216~14.04.1USN-4427-1

Fixed in:4.4.0-186.216USN-4427-1

linux-image-4.4.0-186-powerpc64-embUbuntu

Fixed in:4.4.0-186.216~14.04.1USN-4427-1

Fixed in:4.4.0-186.216USN-4427-1

linux-image-4.4.0-186-powerpc64-smpUbuntu

Fixed in:4.4.0-186.216~14.04.1USN-4427-1

Fixed in:4.4.0-186.216USN-4427-1

linux-image-5.0.0-1045-gkeUbuntu

Fixed in:5.0.0-1045.46USN-4439-1

linux-image-5.0.0-1065-oem-osp1Ubuntu

Fixed in:5.0.0-1065.70USN-4439-1

linux-image-5.3.0-1030-oracleUbuntu

Fixed in:5.3.0-1030.32~18.04.1USN-4440-1

linux-image-5.3.0-1030-raspi2Ubuntu

Fixed in:5.3.0-1030.32~18.04.2USN-4440-1

linux-image-5.3.0-1032-awsUbuntu

Fixed in:5.3.0-1032.34~18.04.2USN-4440-1

linux-image-5.3.0-1032-gcpUbuntu

Fixed in:5.3.0-1032.34~18.04.1USN-4440-1

linux-image-5.3.0-1032-gkeUbuntu

Fixed in:5.3.0-1032.34~18.04.1USN-4440-1

linux-image-5.3.0-1034-azureUbuntu

Fixed in:5.3.0-1034.35~18.04.1USN-4440-1

linux-image-5.3.0-64-genericUbuntu

Fixed in:5.3.0-64.58~18.04.1USN-4440-1

linux-image-5.3.0-64-generic-lpaeUbuntu

Fixed in:5.3.0-64.58~18.04.1USN-4440-1

linux-image-5.3.0-64-lowlatencyUbuntu

Fixed in:5.3.0-64.58~18.04.1USN-4440-1

linux-image-5.4.0-1016-raspiUbuntu

Fixed in:5.4.0-1016.17~18.04.1USN-4483-1

Fixed in:5.4.0-1016.17USN-4483-1

linux-image-5.4.0-1022-awsUbuntu

Fixed in:5.4.0-1022.22~18.04.1USN-4483-1

Fixed in:5.4.0-1022.22USN-4483-1

linux-image-5.4.0-1022-gcpUbuntu

Fixed in:5.4.0-1022.22~18.04.1USN-4483-1

Fixed in:5.4.0-1022.22USN-4483-1

linux-image-5.4.0-1022-oracleUbuntu

Fixed in:5.4.0-1022.22~18.04.1USN-4483-1

Fixed in:5.4.0-1022.22USN-4483-1

linux-image-5.4.0-1023-azureUbuntu

Fixed in:5.4.0-1023.23~18.04.1USN-4483-1

Fixed in:5.4.0-1023.23USN-4483-1

linux-image-5.4.0-45-genericUbuntu

Fixed in:5.4.0-45.49~18.04.2USN-4483-1

Fixed in:5.4.0-45.49USN-4483-1

linux-image-5.4.0-45-generic-lpaeUbuntu

Fixed in:5.4.0-45.49~18.04.2USN-4483-1

Fixed in:5.4.0-45.49USN-4483-1

linux-image-5.4.0-45-lowlatencyUbuntu

Fixed in:5.4.0-45.49~18.04.2USN-4483-1

Fixed in:5.4.0-45.49USN-4483-1

linux-image-awsUbuntu

Fixed in:4.4.0.1075.72USN-4427-1

Fixed in:4.4.0.1111.116USN-4427-1

Fixed in:5.3.0.1032.31USN-4440-1

Fixed in:5.4.0.1022.23USN-4483-1

linux-image-aws-edgeUbuntu

Fixed in:5.4.0.1022.8USN-4483-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1080.77USN-4485-1

linux-image-aws-lts-18.04Ubuntu

Fixed in:4.15.0.1080.82USN-4485-1

linux-image-azureUbuntu

Fixed in:4.15.0.1093.70USN-4485-1

Fixed in:4.15.0.1093.88USN-4485-1

Fixed in:5.4.0.1023.7USN-4483-1

Fixed in:5.3.0.1034.30USN-4440-1

Fixed in:5.4.0.1023.22USN-4483-1

linux-image-azure-edgeUbuntu

Fixed in:4.15.0.1093.88USN-4485-1

linux-image-azure-lts-18.04Ubuntu

Fixed in:4.15.0.1093.67USN-4485-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1081.83USN-4485-1

Fixed in:5.3.0.1032.26USN-4440-1

Fixed in:5.4.0.1022.9USN-4483-1

Fixed in:5.4.0.1022.20USN-4483-1

linux-image-gcp-lts-18.04Ubuntu

Fixed in:4.15.0.1081.99USN-4485-1

linux-image-genericUbuntu

Fixed in:4.4.0.186.192USN-4427-1

Fixed in:4.15.0.115.103USN-4485-1

Fixed in:5.4.0.45.49USN-4483-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.45.49~18.04.38USN-4483-1

linux-image-generic-lpaeUbuntu

Fixed in:4.4.0.186.192USN-4427-1

Fixed in:4.15.0.115.103USN-4485-1

Fixed in:5.4.0.45.49USN-4483-1

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

Fixed in:5.4.0.45.49~18.04.38USN-4483-1

linux-image-generic-lpae-lts-xenialUbuntu

Fixed in:4.4.0.186.163USN-4427-1

linux-image-generic-lts-xenialUbuntu

Fixed in:4.4.0.186.163USN-4427-1

linux-image-gkeUbuntu

Fixed in:4.15.0.1081.83USN-4485-1

Fixed in:4.15.0.1067.71USN-4485-1

Fixed in:5.4.0.1022.20USN-4483-1

linux-image-gke-4.15Ubuntu

Fixed in:4.15.0.1067.71USN-4485-1

linux-image-gke-5.0Ubuntu

Fixed in:5.0.0.1045.30USN-4439-1

linux-image-gke-5.3Ubuntu

Fixed in:5.3.0.1032.17USN-4440-1

linux-image-gke-5.4Ubuntu

Fixed in:5.4.0.1022.9USN-4483-1

linux-image-gkeop-5.3Ubuntu

Fixed in:5.3.0.64.120USN-4440-1

linux-image-gkeop-5.4Ubuntu

Fixed in:5.4.0.45.49~18.04.38USN-4483-1

linux-image-kvmUbuntu

Fixed in:4.4.0.1077.75USN-4427-1

Fixed in:4.15.0.1072.68USN-4485-1

Fixed in:5.4.0.1021.20USN-4483-1

linux-image-lowlatencyUbuntu

Fixed in:4.4.0.186.192USN-4427-1

Fixed in:4.15.0.115.103USN-4485-1

Fixed in:5.4.0.45.49USN-4483-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.45.49~18.04.38USN-4483-1

linux-image-lowlatency-lts-xenialUbuntu

Fixed in:4.4.0.186.163USN-4427-1

linux-image-oemUbuntu

Fixed in:4.15.0.1094.98USN-4485-1

Fixed in:5.4.0.45.49USN-4483-1

linux-image-oem-osp1Ubuntu

Fixed in:5.0.0.1065.63USN-4439-1

Fixed in:5.4.0.45.49USN-4483-1

linux-image-oracleUbuntu

Fixed in:4.15.0.1051.42USN-4485-1

Fixed in:5.3.0.1030.27USN-4440-1

Fixed in:5.4.0.1022.7USN-4483-1

Fixed in:5.4.0.1022.20USN-4483-1

linux-image-oracle-lts-18.04Ubuntu

Fixed in:4.15.0.1051.62USN-4485-1

linux-image-powerpc-e500mcUbuntu

Fixed in:4.4.0.186.192USN-4427-1

linux-image-powerpc-e500mc-lts-xenialUbuntu

Fixed in:4.4.0.186.163USN-4427-1

linux-image-powerpc-smpUbuntu

Fixed in:4.4.0.186.192USN-4427-1

linux-image-powerpc-smp-lts-xenialUbuntu

Fixed in:4.4.0.186.163USN-4427-1

linux-image-powerpc64-embUbuntu

Fixed in:4.4.0.186.192USN-4427-1

linux-image-powerpc64-emb-lts-xenialUbuntu

Fixed in:4.4.0.186.163USN-4427-1

linux-image-powerpc64-smpUbuntu

Fixed in:4.4.0.186.192USN-4427-1

linux-image-powerpc64-smp-lts-xenialUbuntu

Fixed in:4.4.0.186.163USN-4427-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1016.51USN-4483-1

linux-image-raspi-hwe-18.04Ubuntu

Fixed in:5.4.0.1016.20USN-4483-1

linux-image-raspi2Ubuntu

Fixed in:4.4.0.1136.136USN-4427-1

Fixed in:4.15.0.1068.66USN-4485-1

Fixed in:5.4.0.1016.51USN-4483-1

linux-image-raspi2-hwe-18.04Ubuntu

Fixed in:5.3.0.1030.20USN-4440-1

linux-image-snapdragonUbuntu

Fixed in:4.4.0.1140.132USN-4427-1

Fixed in:4.15.0.1084.87USN-4485-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.45.49~18.04.38USN-4483-1

linux-image-virtualUbuntu

Fixed in:4.4.0.186.192USN-4427-1

Fixed in:4.15.0.115.103USN-4485-1

Fixed in:5.4.0.45.49USN-4483-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.45.49~18.04.38USN-4483-1

linux-image-virtual-lts-xenialUbuntu

Fixed in:4.4.0.186.163USN-4427-1

linux-kvmUbuntu

Fixed in:4.4.0-1077.84USN-4427-1

Fixed in:4.15.0-1072.73USN-4485-1

Fixed in:5.4.0-1021.21USN-4483-1

linux-lts-xenialUbuntu

Fixed in:4.4.0-186.216~14.04.1USN-4427-1

linux-oemUbuntu

Fixed in:4.15.0-1094.104USN-4485-1

linux-oem-osp1Ubuntu

Fixed in:5.0.0-1065.70USN-4439-1

linux-oracleUbuntu

Fixed in:4.15.0-1051.55~16.04.1USN-4485-1

Fixed in:4.15.0-1051.55USN-4485-1

Fixed in:5.4.0-1022.22USN-4483-1

linux-oracle-5.3Ubuntu

Fixed in:5.3.0-1030.32~18.04.1USN-4440-1

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1022.22~18.04.1USN-4483-1

linux-raspiUbuntu

Fixed in:5.4.0-1016.17USN-4483-1

linux-raspi-5.4Ubuntu

Fixed in:5.4.0-1016.17~18.04.1USN-4483-1

linux-raspi2Ubuntu

Fixed in:4.4.0-1136.145USN-4427-1

Fixed in:4.15.0-1068.72USN-4485-1

linux-raspi2-5.3Ubuntu

Fixed in:5.3.0-1030.32~18.04.2USN-4440-1

linux-snapdragonUbuntu

Fixed in:4.4.0-1140.148USN-4427-1

Fixed in:4.15.0-1084.92USN-4485-1

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

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.46%probability of exploitation in 30 days

37thpercentile

Low risk: more likely to be exploited than 37% of all known CVEs.

References

Patch1

git.kernel.org

Third-Party Advisory1

bugzilla.redhat.com

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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.