CVE & CISA-KEV Catalog

CVE-2019-11091

MEDIUM
5.6
CVSS v3
NVD

Description

Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf

How to fix

Remediation Available
intel-microcodeDebian
Fixed in:3.20190514.1CVE-2019-11091
Fixed in:3.20190514.1CVE-2019-11091
Fixed in:3.20190514.1CVE-2019-11091
Fixed in:3.20190514.1CVE-2019-11091
intel-microcodeUbuntu
Fixed in:3.20190618.0ubuntu0.14.04.1USN-3977-3
Fixed in:3.20190514.0ubuntu0.14.04.2USN-3977-2
Fixed in:3.20190514.0ubuntu0.14.04.1USN-3977-1
Fixed in:3.20190618.0ubuntu0.16.04.1USN-3977-3
Fixed in:3.20190514.0ubuntu0.16.04.2USN-3977-2
Fixed in:3.20190514.0ubuntu0.16.04.1USN-3977-1
Fixed in:3.20190618.0ubuntu0.18.04.1USN-3977-3
Fixed in:3.20190514.0ubuntu0.18.04.3USN-3977-2
Fixed in:3.20190514.0ubuntu0.18.04.2USN-3977-1
libvirtUbuntu
Fixed in:1.2.2-0ubuntu13.1.28USN-3985-2
Fixed in:1.3.1-1ubuntu10.26USN-3985-1
Fixed in:4.0.0-1ubuntu8.10USN-3985-1
libvirt-binUbuntu
Fixed in:1.3.1-1ubuntu10.26USN-3985-1
libvirt-clientsUbuntu
Fixed in:4.0.0-1ubuntu8.10USN-3985-1
libvirt-daemonUbuntu
Fixed in:4.0.0-1ubuntu8.10USN-3985-1
libvirt0Ubuntu
Fixed in:1.3.1-1ubuntu10.26USN-3985-1
Fixed in:4.0.0-1ubuntu8.10USN-3985-1
linuxUbuntu
Fixed in:3.13.0-170.220USN-3983-1
Fixed in:4.4.0-148.174USN-3982-1
Fixed in:4.15.0-50.54USN-3981-1
linux-awsUbuntu
Fixed in:4.4.0-1083.93USN-3982-1
Fixed in:4.15.0-1039.41USN-3981-1
linux-azureUbuntu
Fixed in:4.15.0-1045.49~14.04.1USN-3981-2
Fixed in:4.15.0-1045.49USN-3981-2
Fixed in:4.18.0-1018.18~18.04.1USN-3980-2
linux-gcpUbuntu
Fixed in:4.15.0-1032.34~16.04.1USN-3981-2
Fixed in:4.15.0-1032.34USN-3981-1
linux-hweUbuntu
Fixed in:4.15.0-50.54~16.04.1USN-3981-2
Fixed in:4.18.0-20.21~18.04.1USN-3980-2
linux-image-3.13.0-170-genericUbuntu
Fixed in:3.13.0-170.220USN-3983-1
linux-image-3.13.0-170-generic-lpaeUbuntu
Fixed in:3.13.0-170.220USN-3983-1
linux-image-3.13.0-170-lowlatencyUbuntu
Fixed in:3.13.0-170.220USN-3983-1
linux-image-3.13.0-170-powerpc-e500Ubuntu
Fixed in:3.13.0-170.220USN-3983-1
linux-image-3.13.0-170-powerpc-e500mcUbuntu
Fixed in:3.13.0-170.220USN-3983-1
linux-image-3.13.0-170-powerpc-smpUbuntu
Fixed in:3.13.0-170.220USN-3983-1
linux-image-3.13.0-170-powerpc64-embUbuntu
Fixed in:3.13.0-170.220USN-3983-1
linux-image-3.13.0-170-powerpc64-smpUbuntu
Fixed in:3.13.0-170.220USN-3983-1
linux-image-4.15.0-1013-oracleUbuntu
Fixed in:4.15.0-1013.15~16.04.1USN-3981-2
Fixed in:4.15.0-1013.15USN-3981-1
linux-image-4.15.0-1032-gcpUbuntu
Fixed in:4.15.0-1032.34~16.04.1USN-3981-2
Fixed in:4.15.0-1032.34USN-3981-1
linux-image-4.15.0-1034-kvmUbuntu
Fixed in:4.15.0-1034.34USN-3981-1
linux-image-4.15.0-1036-raspi2Ubuntu
Fixed in:4.15.0-1036.38USN-3981-1
linux-image-4.15.0-1038-oemUbuntu
Fixed in:4.15.0-1038.43USN-3981-1
linux-image-4.15.0-1039-awsUbuntu
Fixed in:4.15.0-1039.41USN-3981-1
linux-image-4.15.0-1045-azureUbuntu
Fixed in:4.15.0-1045.49~14.04.1USN-3981-2
Fixed in:4.15.0-1045.49USN-3981-2
linux-image-4.15.0-1053-snapdragonUbuntu
Fixed in:4.15.0-1053.57USN-3981-1
linux-image-4.15.0-50-genericUbuntu
Fixed in:4.15.0-50.54~16.04.1USN-3981-2
Fixed in:4.15.0-50.54USN-3981-1
linux-image-4.15.0-50-generic-lpaeUbuntu
Fixed in:4.15.0-50.54~16.04.1USN-3981-2
Fixed in:4.15.0-50.54USN-3981-1
linux-image-4.15.0-50-lowlatencyUbuntu
Fixed in:4.15.0-50.54~16.04.1USN-3981-2
Fixed in:4.15.0-50.54USN-3981-1
linux-image-4.18.0-1018-azureUbuntu
Fixed in:4.18.0-1018.18~18.04.1USN-3980-2
linux-image-4.18.0-20-genericUbuntu
Fixed in:4.18.0-20.21~18.04.1USN-3980-2
linux-image-4.18.0-20-generic-lpaeUbuntu
Fixed in:4.18.0-20.21~18.04.1USN-3980-2
linux-image-4.18.0-20-lowlatencyUbuntu
Fixed in:4.18.0-20.21~18.04.1USN-3980-2
linux-image-4.18.0-20-snapdragonUbuntu
Fixed in:4.18.0-20.21~18.04.1USN-3980-2
linux-image-4.4.0-1046-kvmUbuntu
Fixed in:4.4.0-1046.52USN-3982-1
linux-image-4.4.0-1083-awsUbuntu
Fixed in:4.4.0-1083.93USN-3982-1
linux-image-4.4.0-1109-raspi2Ubuntu
Fixed in:4.4.0-1109.117USN-3982-1
linux-image-4.4.0-1113-snapdragonUbuntu
Fixed in:4.4.0-1113.118USN-3982-1
linux-image-4.4.0-148-genericUbuntu
Fixed in:4.4.0-148.174USN-3982-1
linux-image-4.4.0-148-generic-lpaeUbuntu
Fixed in:4.4.0-148.174USN-3982-1
linux-image-4.4.0-148-lowlatencyUbuntu
Fixed in:4.4.0-148.174USN-3982-1
linux-image-4.4.0-148-powerpc-e500mcUbuntu
Fixed in:4.4.0-148.174USN-3982-1
linux-image-4.4.0-148-powerpc-smpUbuntu
Fixed in:4.4.0-148.174USN-3982-1
linux-image-4.4.0-148-powerpc64-embUbuntu
Fixed in:4.4.0-148.174USN-3982-1
linux-image-4.4.0-148-powerpc64-smpUbuntu
Fixed in:4.4.0-148.174USN-3982-1
linux-image-awsUbuntu
Fixed in:4.4.0.1083.86USN-3982-1
Fixed in:4.15.0.1039.38USN-3981-1
linux-image-azureUbuntu
Fixed in:4.15.0.1045.32USN-3981-2
Fixed in:4.15.0.1045.49USN-3981-2
Fixed in:4.18.0.1018.17USN-3980-2
linux-image-gcpUbuntu
Fixed in:4.15.0.1032.46USN-3981-2
Fixed in:4.15.0.1032.34USN-3981-1
linux-image-genericUbuntu
Fixed in:3.13.0.170.181USN-3983-1
Fixed in:4.4.0.148.156USN-3982-1
Fixed in:4.15.0.50.52USN-3981-1
linux-image-generic-hwe-16.04Ubuntu
Fixed in:4.15.0.50.71USN-3981-2
linux-image-generic-hwe-18.04Ubuntu
Fixed in:4.18.0.20.70USN-3980-2
linux-image-generic-lpaeUbuntu
Fixed in:3.13.0.170.181USN-3983-1
Fixed in:4.4.0.148.156USN-3982-1
Fixed in:4.15.0.50.52USN-3981-1
linux-image-generic-lpae-hwe-16.04Ubuntu
Fixed in:4.15.0.50.71USN-3981-2
linux-image-generic-lpae-hwe-18.04Ubuntu
Fixed in:4.18.0.20.70USN-3980-2
linux-image-gkeUbuntu
Fixed in:4.15.0.1032.46USN-3981-2
linux-image-kvmUbuntu
Fixed in:4.4.0.1046.46USN-3982-1
Fixed in:4.15.0.1034.34USN-3981-1
linux-image-lowlatencyUbuntu
Fixed in:3.13.0.170.181USN-3983-1
Fixed in:4.4.0.148.156USN-3982-1
Fixed in:4.15.0.50.52USN-3981-1
linux-image-lowlatency-hwe-16.04Ubuntu
Fixed in:4.15.0.50.71USN-3981-2
linux-image-lowlatency-hwe-18.04Ubuntu
Fixed in:4.18.0.20.70USN-3980-2
linux-image-oemUbuntu
Fixed in:4.15.0.50.71USN-3981-2
Fixed in:4.15.0.1038.43USN-3981-1
linux-image-oracleUbuntu
Fixed in:4.15.0.1013.7USN-3981-2
Fixed in:4.15.0.1013.16USN-3981-1
linux-image-powerpc-e500Ubuntu
Fixed in:3.13.0.170.181USN-3983-1
linux-image-powerpc-e500mcUbuntu
Fixed in:3.13.0.170.181USN-3983-1
Fixed in:4.4.0.148.156USN-3982-1
linux-image-powerpc-smpUbuntu
Fixed in:3.13.0.170.181USN-3983-1
Fixed in:4.4.0.148.156USN-3982-1
linux-image-powerpc64-embUbuntu
Fixed in:3.13.0.170.181USN-3983-1
Fixed in:4.4.0.148.156USN-3982-1
linux-image-powerpc64-smpUbuntu
Fixed in:3.13.0.170.181USN-3983-1
Fixed in:4.4.0.148.156USN-3982-1
linux-image-raspi2Ubuntu
Fixed in:4.4.0.1109.109USN-3982-1
Fixed in:4.15.0.1036.34USN-3981-1
linux-image-snapdragonUbuntu
Fixed in:4.4.0.1113.105USN-3982-1
Fixed in:4.15.0.1053.56USN-3981-1
linux-image-snapdragon-hwe-18.04Ubuntu
Fixed in:4.18.0.20.70USN-3980-2
linux-image-virtualUbuntu
Fixed in:3.13.0.170.181USN-3983-1
Fixed in:4.4.0.148.156USN-3982-1
Fixed in:4.15.0.50.52USN-3981-1
linux-image-virtual-hwe-16.04Ubuntu
Fixed in:4.15.0.50.71USN-3981-2
linux-image-virtual-hwe-18.04Ubuntu
Fixed in:4.18.0.20.70USN-3980-2
linux-kvmUbuntu
Fixed in:4.4.0-1046.52USN-3982-1
Fixed in:4.15.0-1034.34USN-3981-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-148.174~14.04.1USN-3982-2
linux-oemUbuntu
Fixed in:4.15.0-1038.43USN-3981-1
linux-oracleUbuntu
Fixed in:4.15.0-1013.15~16.04.1USN-3981-2
Fixed in:4.15.0-1013.15USN-3981-1
linux-raspi2Ubuntu
Fixed in:4.4.0-1109.117USN-3982-1
Fixed in:4.15.0-1036.38USN-3981-1
linux-snapdragonUbuntu
Fixed in:4.4.0-1113.118USN-3982-1
Fixed in:4.15.0-1053.57USN-3981-1
qemuUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.46USN-3978-1
Fixed in:1:2.5+dfsg-5ubuntu10.38USN-3978-1
Fixed in:1:2.11+dfsg-1ubuntu7.13USN-3978-1
qemu-system-x86Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.46USN-3978-1
Fixed in:1:2.5+dfsg-5ubuntu10.38USN-3978-1
Fixed in:1:2.11+dfsg-1ubuntu7.13USN-3978-1

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 ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeChanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

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

Exploit Intelligence

0.61%probability of exploitation in 30 days
45thpercentile

Moderate risk: more likely to be exploited than 45% of all known CVEs.

References

Vendor Advisory1
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Markdown

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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 2026-05-28.