Is CVE-2020-11565 in the CISA KEV catalog?

No. CVE-2020-11565 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-11565?

CVE-2020-11565 has a CVSS v3 base score of 6.0 (MEDIUM).

What is the EPSS score for CVE-2020-11565?

CVE-2020-11565 has an EPSS score of 0.52% (40th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-11565?

Upgrade linux on debian 11 to 5.5.17-1 or later. Fixes are available for 115 affected products.

CVE & CISA-KEV Catalog

CVE-2020-11565

MEDIUM

6.0

CVSS v3

NVD

Description

An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”

CWE-787Out-of-bounds Write

How to fix

Remediation Available

linuxDebian

Fixed in:5.5.17-1CVE-2020-11565

linuxUbuntu

Fixed in:4.4.0-179.209USN-4364-1

Fixed in:4.15.0-101.102USN-4363-1

Fixed in:5.4.0-31.35USN-4367-1

linux-awsUbuntu

Fixed in:4.4.0-1067.71USN-4364-1

Fixed in:4.4.0-1107.118USN-4364-1

Fixed in:4.15.0-1067.71USN-4363-1

Fixed in:5.4.0-1011.11USN-4367-1

linux-aws-5.3Ubuntu

Fixed in:5.3.0-1019.21~18.04.1USN-4369-1

linux-aws-hweUbuntu

Fixed in:4.15.0-1067.71~16.04.1USN-4363-1

linux-azureUbuntu

Fixed in:4.15.0-1083.93~16.04.1USN-4363-1

Fixed in:5.4.0-1012.12USN-4367-1

linux-azure-4.15Ubuntu

Fixed in:4.15.0-1083.93USN-4363-1

linux-azure-5.3Ubuntu

Fixed in:5.3.0-1022.23~18.04.1USN-4369-1

linux-gcpUbuntu

Fixed in:4.15.0-1071.81~16.04.1USN-4363-1

Fixed in:5.4.0-1011.11USN-4367-1

linux-gcp-5.3Ubuntu

Fixed in:5.3.0-1020.22~18.04.1USN-4369-1

linux-gke-4.15Ubuntu

Fixed in:4.15.0-1059.62USN-4363-1

linux-gke-5.0Ubuntu

Fixed in:5.0.0-1037.38USN-4368-1

linux-gke-5.3Ubuntu

Fixed in:5.3.0-1020.22~18.04.1USN-4369-1

linux-hweUbuntu

Fixed in:4.15.0-101.102~16.04.1USN-4363-1

Fixed in:5.3.0-53.47~18.04.1USN-4369-1

linux-image-4.15.0-101-genericUbuntu

Fixed in:4.15.0-101.102~16.04.1USN-4363-1

Fixed in:4.15.0-101.102USN-4363-1

linux-image-4.15.0-101-generic-lpaeUbuntu

Fixed in:4.15.0-101.102~16.04.1USN-4363-1

Fixed in:4.15.0-101.102USN-4363-1

linux-image-4.15.0-101-lowlatencyUbuntu

Fixed in:4.15.0-101.102~16.04.1USN-4363-1

Fixed in:4.15.0-101.102USN-4363-1

linux-image-4.15.0-1039-oracleUbuntu

Fixed in:4.15.0-1039.43~16.04.1USN-4363-1

Fixed in:4.15.0-1039.43USN-4363-1

linux-image-4.15.0-1059-gkeUbuntu

Fixed in:4.15.0-1059.62USN-4363-1

linux-image-4.15.0-1060-kvmUbuntu

Fixed in:4.15.0-1060.61USN-4363-1

linux-image-4.15.0-1062-raspi2Ubuntu

Fixed in:4.15.0-1062.66USN-4363-1

linux-image-4.15.0-1067-awsUbuntu

Fixed in:4.15.0-1067.71~16.04.1USN-4363-1

Fixed in:4.15.0-1067.71USN-4363-1

linux-image-4.15.0-1071-gcpUbuntu

Fixed in:4.15.0-1071.81~16.04.1USN-4363-1

linux-image-4.15.0-1079-snapdragonUbuntu

Fixed in:4.15.0-1079.86USN-4363-1

linux-image-4.15.0-1081-oemUbuntu

Fixed in:4.15.0-1081.91USN-4363-1

linux-image-4.15.0-1083-azureUbuntu

Fixed in:4.15.0-1083.93~16.04.1USN-4363-1

Fixed in:4.15.0-1083.93USN-4363-1

linux-image-4.4.0-1067-awsUbuntu

Fixed in:4.4.0-1067.71USN-4364-1

linux-image-4.4.0-1071-kvmUbuntu

Fixed in:4.4.0-1071.78USN-4364-1

linux-image-4.4.0-1107-awsUbuntu

Fixed in:4.4.0-1107.118USN-4364-1

linux-image-4.4.0-1133-raspi2Ubuntu

Fixed in:4.4.0-1133.142USN-4364-1

linux-image-4.4.0-1137-snapdragonUbuntu

Fixed in:4.4.0-1137.145USN-4364-1

linux-image-4.4.0-179-genericUbuntu

Fixed in:4.4.0-179.209~14.04.1+signed1USN-4364-1

Fixed in:4.4.0-179.209USN-4364-1

linux-image-4.4.0-179-generic-lpaeUbuntu

Fixed in:4.4.0-179.209~14.04.1USN-4364-1

Fixed in:4.4.0-179.209USN-4364-1

linux-image-4.4.0-179-lowlatencyUbuntu

Fixed in:4.4.0-179.209~14.04.1+signed1USN-4364-1

Fixed in:4.4.0-179.209USN-4364-1

linux-image-4.4.0-179-powerpc-e500mcUbuntu

Fixed in:4.4.0-179.209~14.04.1USN-4364-1

Fixed in:4.4.0-179.209USN-4364-1

linux-image-4.4.0-179-powerpc-smpUbuntu

Fixed in:4.4.0-179.209~14.04.1USN-4364-1

Fixed in:4.4.0-179.209USN-4364-1

linux-image-4.4.0-179-powerpc64-embUbuntu

Fixed in:4.4.0-179.209~14.04.1USN-4364-1

Fixed in:4.4.0-179.209USN-4364-1

linux-image-4.4.0-179-powerpc64-smpUbuntu

Fixed in:4.4.0-179.209~14.04.1USN-4364-1

Fixed in:4.4.0-179.209USN-4364-1

linux-image-5.0.0-1037-gkeUbuntu

Fixed in:5.0.0-1037.38USN-4368-1

linux-image-5.0.0-1052-oem-osp1Ubuntu

Fixed in:5.0.0-1052.57USN-4368-1

linux-image-5.3.0-1018-oracleUbuntu

Fixed in:5.3.0-1018.20~18.04.1USN-4369-1

linux-image-5.3.0-1019-awsUbuntu

Fixed in:5.3.0-1019.21~18.04.1USN-4369-1

linux-image-5.3.0-1020-gcpUbuntu

Fixed in:5.3.0-1020.22~18.04.1USN-4369-1

linux-image-5.3.0-1020-gkeUbuntu

Fixed in:5.3.0-1020.22~18.04.1USN-4369-1

linux-image-5.3.0-1022-azureUbuntu

Fixed in:5.3.0-1022.23~18.04.1USN-4369-1

linux-image-5.3.0-53-genericUbuntu

Fixed in:5.3.0-53.47~18.04.1USN-4369-1

linux-image-5.3.0-53-generic-lpaeUbuntu

Fixed in:5.3.0-53.47~18.04.1USN-4369-1

linux-image-5.3.0-53-lowlatencyUbuntu

Fixed in:5.3.0-53.47~18.04.1USN-4369-1

linux-image-5.4.0-1011-awsUbuntu

Fixed in:5.4.0-1011.11USN-4367-1

linux-image-5.4.0-1011-gcpUbuntu

Fixed in:5.4.0-1011.11USN-4367-1

linux-image-5.4.0-1011-kvmUbuntu

Fixed in:5.4.0-1011.11USN-4367-1

linux-image-5.4.0-1011-oracleUbuntu

Fixed in:5.4.0-1011.11USN-4367-1

linux-image-5.4.0-1011-raspiUbuntu

Fixed in:5.4.0-1011.11USN-4367-1

linux-image-5.4.0-1012-azureUbuntu

Fixed in:5.4.0-1012.12USN-4367-1

linux-image-5.4.0-26-genericUbuntu

Fixed in:5.4.0-26.30USN-4367-1

linux-image-5.4.0-31-genericUbuntu

Fixed in:5.4.0-31.35USN-4367-1

linux-image-5.4.0-31-generic-lpaeUbuntu

Fixed in:5.4.0-31.35USN-4367-1

linux-image-5.4.0-31-lowlatencyUbuntu

Fixed in:5.4.0-31.35USN-4367-1

linux-image-awsUbuntu

Fixed in:4.4.0.1067.68USN-4364-1

Fixed in:4.4.0.1107.111USN-4364-1

Fixed in:5.3.0.1019.20USN-4369-1

Fixed in:5.4.0.1011.14USN-4367-1

linux-image-aws-edgeUbuntu

Fixed in:5.3.0.1019.20USN-4369-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1067.67USN-4363-1

linux-image-aws-lts-18.04Ubuntu

Fixed in:4.15.0.1067.70USN-4363-1

linux-image-azureUbuntu

Fixed in:4.15.0.1083.82USN-4363-1

Fixed in:5.3.0.1022.22USN-4369-1

Fixed in:5.4.0.1012.14USN-4367-1

linux-image-azure-edgeUbuntu

Fixed in:4.15.0.1083.82USN-4363-1

Fixed in:5.3.0.1022.22USN-4369-1

linux-image-azure-lts-18.04Ubuntu

Fixed in:4.15.0.1083.54USN-4363-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1071.77USN-4363-1

Fixed in:5.3.0.1020.19USN-4369-1

Fixed in:5.4.0.1011.12USN-4367-1

linux-image-gcp-edgeUbuntu

Fixed in:5.3.0.1020.19USN-4369-1

linux-image-genericUbuntu

Fixed in:4.4.0.179.187USN-4364-1

Fixed in:4.15.0.101.91USN-4363-1

Fixed in:5.4.0.31.36USN-4367-1

linux-image-generic-hwe-16.04Ubuntu

Fixed in:4.15.0.101.108USN-4363-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.3.0.53.109USN-4369-1

linux-image-generic-lpaeUbuntu

Fixed in:4.4.0.179.187USN-4364-1

Fixed in:4.15.0.101.91USN-4363-1

Fixed in:5.4.0.31.36USN-4367-1

linux-image-generic-lpae-hwe-16.04Ubuntu

Fixed in:4.15.0.101.108USN-4363-1

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

Fixed in:5.3.0.53.109USN-4369-1

linux-image-generic-lpae-lts-xenialUbuntu

Fixed in:4.4.0.179.158USN-4364-1

linux-image-generic-lts-xenialUbuntu

Fixed in:4.4.0.179.158USN-4364-1

linux-image-gkeUbuntu

Fixed in:4.15.0.1071.77USN-4363-1

Fixed in:4.15.0.1059.63USN-4363-1

Fixed in:5.4.0.1011.12USN-4367-1

linux-image-gke-4.15Ubuntu

Fixed in:4.15.0.1059.63USN-4363-1

linux-image-gke-5.0Ubuntu

Fixed in:5.0.0.1037.25USN-4368-1

linux-image-gke-5.3Ubuntu

Fixed in:5.3.0.1020.10USN-4369-1

linux-image-gkeop-5.3Ubuntu

Fixed in:5.3.0.53.109USN-4369-1

linux-image-kvmUbuntu

Fixed in:4.4.0.1071.71USN-4364-1

Fixed in:4.15.0.1060.60USN-4363-1

Fixed in:5.4.0.1011.12USN-4367-1

linux-image-lowlatencyUbuntu

Fixed in:4.4.0.179.187USN-4364-1

Fixed in:4.15.0.101.91USN-4363-1

Fixed in:5.4.0.31.36USN-4367-1

linux-image-lowlatency-hwe-16.04Ubuntu

Fixed in:4.15.0.101.108USN-4363-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.3.0.53.109USN-4369-1

linux-image-lowlatency-lts-xenialUbuntu

Fixed in:4.4.0.179.158USN-4364-1

linux-image-oemUbuntu

Fixed in:4.15.0.101.108USN-4363-1

Fixed in:4.15.0.1081.85USN-4363-1

Fixed in:5.4.0.31.36USN-4367-1

linux-image-oem-osp1Ubuntu

Fixed in:5.0.0.1052.55USN-4368-1

Fixed in:5.4.0.31.36USN-4367-1

linux-image-oracleUbuntu

Fixed in:4.15.0.1039.32USN-4363-1

Fixed in:5.3.0.1018.19USN-4369-1

Fixed in:5.4.0.1011.12USN-4367-1

linux-image-oracle-lts-18.04Ubuntu

Fixed in:4.15.0.1039.48USN-4363-1

linux-image-powerpc-e500mcUbuntu

Fixed in:4.4.0.179.187USN-4364-1

linux-image-powerpc-e500mc-lts-xenialUbuntu

Fixed in:4.4.0.179.158USN-4364-1

linux-image-powerpc-smpUbuntu

Fixed in:4.4.0.179.187USN-4364-1

linux-image-powerpc-smp-lts-xenialUbuntu

Fixed in:4.4.0.179.158USN-4364-1

linux-image-powerpc64-embUbuntu

Fixed in:4.4.0.179.187USN-4364-1

linux-image-powerpc64-emb-lts-xenialUbuntu

Fixed in:4.4.0.179.158USN-4364-1

linux-image-powerpc64-smpUbuntu

Fixed in:4.4.0.179.187USN-4364-1

linux-image-powerpc64-smp-lts-xenialUbuntu

Fixed in:4.4.0.179.158USN-4364-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1011.11USN-4367-1

linux-image-raspi2Ubuntu

Fixed in:4.4.0.1133.133USN-4364-1

Fixed in:4.15.0.1062.60USN-4363-1

Fixed in:5.4.0.1011.11USN-4367-1

linux-image-snapdragonUbuntu

Fixed in:4.4.0.1137.129USN-4364-1

Fixed in:4.15.0.1079.82USN-4363-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.3.0.53.109USN-4369-1

linux-image-virtualUbuntu

Fixed in:4.4.0.179.187USN-4364-1

Fixed in:4.15.0.101.91USN-4363-1

Fixed in:5.4.0.31.36USN-4367-1

linux-image-virtual-hwe-16.04Ubuntu

Fixed in:4.15.0.101.108USN-4363-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.3.0.53.109USN-4369-1

linux-image-virtual-lts-xenialUbuntu

Fixed in:4.4.0.179.158USN-4364-1

linux-kvmUbuntu

Fixed in:4.4.0-1071.78USN-4364-1

Fixed in:4.15.0-1060.61USN-4363-1

Fixed in:5.4.0-1011.11USN-4367-1

linux-lts-xenialUbuntu

Fixed in:4.4.0-179.209~14.04.1USN-4364-1

linux-oemUbuntu

Fixed in:4.15.0-1081.91USN-4363-1

linux-oem-osp1Ubuntu

Fixed in:5.0.0-1052.57USN-4368-1

linux-oracleUbuntu

Fixed in:4.15.0-1039.43~16.04.1USN-4363-1

Fixed in:4.15.0-1039.43USN-4363-1

Fixed in:5.4.0-1011.11USN-4367-1

linux-oracle-5.3Ubuntu

Fixed in:5.3.0-1018.20~18.04.1USN-4369-1

linux-raspiUbuntu

Fixed in:5.4.0-1011.11USN-4367-1

linux-raspi2Ubuntu

Fixed in:4.4.0-1133.142USN-4364-1

Fixed in:4.15.0-1062.66USN-4363-1

linux-riscvUbuntu

Fixed in:5.4.0-26.30USN-4367-1

linux-snapdragonUbuntu

Fixed in:4.4.0-1137.145USN-4364-1

Fixed in:4.15.0-1079.86USN-4363-1

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

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.52%probability of exploitation in 30 days

40thpercentile

Moderate risk: more likely to be exploited than 40% of all known CVEs.

References

Patch2

Third-Party Advisory4

Other references6

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	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.