CVE-2020-25645

HIGHEPSS 83th pctl

7.5

CVSS v3

Description

A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality.

CWE-319

How to fix

Remediation Available

linuxDebian

Fixed in:5.8.14-1CVE-2020-25645

awsUbuntu

Fixed in:4.4.0-1098LSN-0074-1

Fixed in:5.4.0-1009LSN-0074-1

aws-fipsUbuntu

Fixed in:4.15.0-2030LSN-0074-1

azureUbuntu

Fixed in:4.15.0-1078LSN-0074-1

Fixed in:5.4.0-1010LSN-0074-1

azure-fipsUbuntu

Fixed in:4.15.0-2012LSN-0074-1

fipsUbuntu

Fixed in:4.4.0-1049LSN-0074-1

Fixed in:4.15.0-1045LSN-0074-1

gcpUbuntu

Fixed in:5.4.0-1009LSN-0074-1

generic-4.15Ubuntu

Fixed in:4.15.0-69LSN-0074-1

generic-4.4Ubuntu

Fixed in:4.4.0-168LSN-0074-1

generic-5.4Ubuntu

Fixed in:5.4.0-26LSN-0074-1

gkeopUbuntu

Fixed in:5.4.0-1009LSN-0074-1

gkeop-5.4Ubuntu

Fixed in:5.4.0-1007LSN-0074-1

linuxUbuntu

Fixed in:4.4.0-197.229USN-4657-1

Fixed in:4.15.0-126.129USN-4660-1

Fixed in:5.4.0-56.62USN-4658-1

linux-awsUbuntu

Fixed in:4.4.0-1082.86USN-4657-1

Fixed in:4.4.0-1118.132USN-4657-1

Fixed in:4.15.0-1088.93USN-4660-1

Fixed in:5.4.0-1030.31USN-4658-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1030.31~18.04.1USN-4658-1

linux-aws-hweUbuntu

Fixed in:4.15.0-1088.93~16.04.1USN-4660-1

linux-azureUbuntu

Fixed in:4.15.0-1100.111~14.04.1USN-4660-1

Fixed in:4.15.0-1100.111~16.04.1USN-4660-1

Fixed in:5.4.0-1032.33USN-4658-1

linux-azure-4.15Ubuntu

Fixed in:4.15.0-1100.111USN-4660-1

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1032.33~18.04.1USN-4658-1

linux-gcpUbuntu

Fixed in:4.15.0-1088.101~16.04.1USN-4660-1

Fixed in:5.4.0-1030.32USN-4658-1

linux-gcp-4.15Ubuntu

Fixed in:4.15.0-1088.101USN-4660-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1030.32~18.04.1USN-4658-1

linux-gke-4.15Ubuntu

Fixed in:4.15.0-1074.79USN-4660-1

linux-hweUbuntu

Fixed in:4.15.0-126.129~16.04.1USN-4660-1

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-56.62~18.04.1USN-4658-1

linux-image-4.15.0-1059-oracleUbuntu

Fixed in:4.15.0-1059.65~16.04.1USN-4660-1

Fixed in:4.15.0-1059.65USN-4660-1

linux-image-4.15.0-1074-gkeUbuntu

Fixed in:4.15.0-1074.79USN-4660-1

linux-image-4.15.0-1074-raspi2Ubuntu

Fixed in:4.15.0-1074.79USN-4660-1

linux-image-4.15.0-1079-kvmUbuntu

Fixed in:4.15.0-1079.81USN-4660-1

linux-image-4.15.0-1088-awsUbuntu

Fixed in:4.15.0-1088.93~16.04.1USN-4660-1

Fixed in:4.15.0-1088.93USN-4660-1

linux-image-4.15.0-1088-gcpUbuntu

Fixed in:4.15.0-1088.101~16.04.1USN-4660-1

Fixed in:4.15.0-1088.101USN-4660-1

linux-image-4.15.0-1091-snapdragonUbuntu

Fixed in:4.15.0-1091.100USN-4660-1

linux-image-4.15.0-1100-azureUbuntu

Fixed in:4.15.0-1100.111~14.04.1USN-4660-1

Fixed in:4.15.0-1100.111~16.04.1USN-4660-1

Fixed in:4.15.0-1100.111USN-4660-1

linux-image-4.15.0-1103-oemUbuntu

Fixed in:4.15.0-1103.114USN-4660-1

linux-image-4.15.0-126-genericUbuntu

Fixed in:4.15.0-126.129~16.04.1USN-4660-1

Fixed in:4.15.0-126.129USN-4660-1

linux-image-4.15.0-126-generic-lpaeUbuntu

Fixed in:4.15.0-126.129~16.04.1USN-4660-1

Fixed in:4.15.0-126.129USN-4660-1

linux-image-4.15.0-126-lowlatencyUbuntu

Fixed in:4.15.0-126.129~16.04.1USN-4660-1

Fixed in:4.15.0-126.129USN-4660-1

linux-image-4.4.0-1082-awsUbuntu

Fixed in:4.4.0-1082.86USN-4657-1

linux-image-4.4.0-1084-kvmUbuntu

Fixed in:4.4.0-1084.93USN-4657-1

linux-image-4.4.0-1118-awsUbuntu

Fixed in:4.4.0-1118.132USN-4657-1

linux-image-4.4.0-1142-raspi2Ubuntu

Fixed in:4.4.0-1142.152USN-4657-1

linux-image-4.4.0-1146-snapdragonUbuntu

Fixed in:4.4.0-1146.156USN-4657-1

linux-image-4.4.0-197-genericUbuntu

Fixed in:4.4.0-197.229~14.04.1USN-4657-1

Fixed in:4.4.0-197.229USN-4657-1

linux-image-4.4.0-197-generic-lpaeUbuntu

Fixed in:4.4.0-197.229~14.04.1USN-4657-1

Fixed in:4.4.0-197.229USN-4657-1

linux-image-4.4.0-197-lowlatencyUbuntu

Fixed in:4.4.0-197.229~14.04.1USN-4657-1

Fixed in:4.4.0-197.229USN-4657-1

linux-image-4.4.0-197-powerpc-e500mcUbuntu

Fixed in:4.4.0-197.229~14.04.1USN-4657-1

Fixed in:4.4.0-197.229USN-4657-1

linux-image-4.4.0-197-powerpc-smpUbuntu

Fixed in:4.4.0-197.229~14.04.1USN-4657-1

Fixed in:4.4.0-197.229USN-4657-1

linux-image-4.4.0-197-powerpc64-embUbuntu

Fixed in:4.4.0-197.229~14.04.1USN-4657-1

Fixed in:4.4.0-197.229USN-4657-1

linux-image-4.4.0-197-powerpc64-smpUbuntu

Fixed in:4.4.0-197.229~14.04.1USN-4657-1

Fixed in:4.4.0-197.229USN-4657-1

linux-image-5.4.0-1023-raspiUbuntu

Fixed in:5.4.0-1023.26~18.04.1USN-4658-1

Fixed in:5.4.0-1023.26USN-4658-1

linux-image-5.4.0-1028-kvmUbuntu

Fixed in:5.4.0-1028.29USN-4658-1

linux-image-5.4.0-1030-awsUbuntu

Fixed in:5.4.0-1030.31~18.04.1USN-4658-1

Fixed in:5.4.0-1030.31USN-4658-1

linux-image-5.4.0-1030-gcpUbuntu

Fixed in:5.4.0-1030.32~18.04.1USN-4658-1

Fixed in:5.4.0-1030.32USN-4658-1

linux-image-5.4.0-1030-oracleUbuntu

Fixed in:5.4.0-1030.32~18.04.1USN-4658-1

Fixed in:5.4.0-1030.32USN-4658-1

linux-image-5.4.0-1032-azureUbuntu

Fixed in:5.4.0-1032.33~18.04.1USN-4658-1

Fixed in:5.4.0-1032.33USN-4658-1

linux-image-5.4.0-56-genericUbuntu

Fixed in:5.4.0-56.62~18.04.1USN-4658-1

Fixed in:5.4.0-56.62USN-4658-1

linux-image-5.4.0-56-generic-lpaeUbuntu

Fixed in:5.4.0-56.62~18.04.1USN-4658-1

Fixed in:5.4.0-56.62USN-4658-1

linux-image-5.4.0-56-lowlatencyUbuntu

Fixed in:5.4.0-56.62~18.04.1USN-4658-1

Fixed in:5.4.0-56.62USN-4658-1

linux-image-5.6.0-1053-oemUbuntu

Fixed in:5.6.0-1053.57USN-4912-1

linux-image-awsUbuntu

Fixed in:4.4.0.1082.79USN-4657-1

Fixed in:4.4.0.1118.123USN-4657-1

Fixed in:5.4.0.1030.15USN-4658-1

Fixed in:5.4.0.1030.31USN-4658-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1088.82USN-4660-1

linux-image-aws-lts-18.04Ubuntu

Fixed in:4.15.0.1088.90USN-4660-1

linux-image-azureUbuntu

Fixed in:4.15.0.1100.75USN-4660-1

Fixed in:4.15.0.1100.93USN-4660-1

Fixed in:5.4.0.1032.14USN-4658-1

Fixed in:5.4.0.1032.30USN-4658-1

linux-image-azure-edgeUbuntu

Fixed in:4.15.0.1100.93USN-4660-1

linux-image-azure-lts-18.04Ubuntu

Fixed in:4.15.0.1100.73USN-4660-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1088.89USN-4660-1

Fixed in:5.4.0.1030.18USN-4658-1

Fixed in:5.4.0.1030.38USN-4658-1

linux-image-gcp-lts-18.04Ubuntu

Fixed in:4.15.0.1088.106USN-4660-1

linux-image-genericUbuntu

Fixed in:4.4.0.197.203USN-4657-1

Fixed in:4.15.0.126.113USN-4660-1

Fixed in:5.4.0.56.59USN-4658-1

linux-image-generic-hwe-16.04Ubuntu

Fixed in:4.15.0.126.125USN-4660-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.56.62~18.04.50USN-4658-1

linux-image-generic-hwe-20.04Ubuntu

Fixed in:5.4.0.56.59USN-4658-1

linux-image-generic-lpaeUbuntu

Fixed in:4.4.0.197.203USN-4657-1

Fixed in:4.15.0.126.113USN-4660-1

Fixed in:5.4.0.56.59USN-4658-1

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

Fixed in:4.15.0.126.125USN-4660-1

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

Fixed in:5.4.0.56.62~18.04.50USN-4658-1

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

Fixed in:5.4.0.56.59USN-4658-1

linux-image-generic-lpae-lts-xenialUbuntu

Fixed in:4.4.0.197.172USN-4657-1

linux-image-generic-lts-xenialUbuntu

Fixed in:4.4.0.197.172USN-4657-1

linux-image-gkeUbuntu

Fixed in:4.15.0.1088.89USN-4660-1

Fixed in:4.15.0.1074.78USN-4660-1

Fixed in:5.4.0.1030.38USN-4658-1

linux-image-gke-4.15Ubuntu

Fixed in:4.15.0.1074.78USN-4660-1

linux-image-kvmUbuntu

Fixed in:4.4.0.1084.82USN-4657-1

Fixed in:4.15.0.1079.75USN-4660-1

Fixed in:5.4.0.1028.26USN-4658-1

linux-image-lowlatencyUbuntu

Fixed in:4.4.0.197.203USN-4657-1

Fixed in:4.15.0.126.113USN-4660-1

Fixed in:5.4.0.56.59USN-4658-1

linux-image-lowlatency-hwe-16.04Ubuntu

Fixed in:4.15.0.126.125USN-4660-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.56.62~18.04.50USN-4658-1

linux-image-lowlatency-hwe-20.04Ubuntu

Fixed in:5.4.0.56.59USN-4658-1

linux-image-lowlatency-lts-xenialUbuntu

Fixed in:4.4.0.197.172USN-4657-1

linux-image-oemUbuntu

Fixed in:4.15.0.126.125USN-4660-1

Fixed in:4.15.0.1103.107USN-4660-1

Fixed in:5.4.0.56.59USN-4658-1

linux-image-oem-20.04Ubuntu

Fixed in:5.6.0.1053.49USN-4912-1

linux-image-oem-osp1Ubuntu

Fixed in:5.4.0.56.62~18.04.50USN-4658-1

Fixed in:5.4.0.56.59USN-4658-1

linux-image-oracleUbuntu

Fixed in:4.15.0.1059.48USN-4660-1

Fixed in:5.4.0.1030.14USN-4658-1

Fixed in:5.4.0.1030.27USN-4658-1

linux-image-oracle-lts-18.04Ubuntu

Fixed in:4.15.0.1059.69USN-4660-1

linux-image-powerpc-e500mcUbuntu

Fixed in:4.4.0.197.203USN-4657-1

linux-image-powerpc-e500mc-lts-xenialUbuntu

Fixed in:4.4.0.197.172USN-4657-1

linux-image-powerpc-smpUbuntu

Fixed in:4.4.0.197.203USN-4657-1

linux-image-powerpc-smp-lts-xenialUbuntu

Fixed in:4.4.0.197.172USN-4657-1

linux-image-powerpc64-embUbuntu

Fixed in:4.4.0.197.203USN-4657-1

linux-image-powerpc64-emb-lts-xenialUbuntu

Fixed in:4.4.0.197.172USN-4657-1

linux-image-powerpc64-smpUbuntu

Fixed in:4.4.0.197.203USN-4657-1

linux-image-powerpc64-smp-lts-xenialUbuntu

Fixed in:4.4.0.197.172USN-4657-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1023.58USN-4658-1

linux-image-raspi-hwe-18.04Ubuntu

Fixed in:5.4.0.1023.27USN-4658-1

linux-image-raspi2Ubuntu

Fixed in:4.4.0.1142.142USN-4657-1

Fixed in:4.15.0.1074.71USN-4660-1

Fixed in:5.4.0.1023.58USN-4658-1

linux-image-snapdragonUbuntu

Fixed in:4.4.0.1146.138USN-4657-1

Fixed in:4.15.0.1091.94USN-4660-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.56.62~18.04.50USN-4658-1

linux-image-virtualUbuntu

Fixed in:4.4.0.197.203USN-4657-1

Fixed in:4.15.0.126.113USN-4660-1

Fixed in:5.4.0.56.59USN-4658-1

linux-image-virtual-hwe-16.04Ubuntu

Fixed in:4.15.0.126.125USN-4660-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.56.62~18.04.50USN-4658-1

linux-image-virtual-hwe-20.04Ubuntu

Fixed in:5.4.0.56.59USN-4658-1

linux-image-virtual-lts-xenialUbuntu

Fixed in:4.4.0.197.172USN-4657-1

linux-kvmUbuntu

Fixed in:4.4.0-1084.93USN-4657-1

Fixed in:4.15.0-1079.81USN-4660-1

Fixed in:5.4.0-1028.29USN-4658-1

linux-lts-xenialUbuntu

Fixed in:4.4.0-197.229~14.04.1USN-4657-1

linux-oemUbuntu

Fixed in:4.15.0-1103.114USN-4660-1

linux-oem-5.6Ubuntu

Fixed in:5.6.0-1053.57USN-4912-1

linux-oracleUbuntu

Fixed in:4.15.0-1059.65~16.04.1USN-4660-1

Fixed in:4.15.0-1059.65USN-4660-1

Fixed in:5.4.0-1030.32USN-4658-1

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1030.32~18.04.1USN-4658-1

linux-raspiUbuntu

Fixed in:5.4.0-1023.26USN-4658-1

linux-raspi-5.4Ubuntu

Fixed in:5.4.0-1023.26~18.04.1USN-4658-1

linux-raspi2Ubuntu

Fixed in:4.4.0-1142.152USN-4657-1

Fixed in:4.15.0-1074.79USN-4660-1

linux-snapdragonUbuntu

Fixed in:4.4.0-1146.156USN-4657-1

Fixed in:4.15.0-1091.100USN-4660-1

lowlatency-4.15Ubuntu

Fixed in:4.15.0-69LSN-0074-1

lowlatency-4.4Ubuntu

Fixed in:4.4.0-168LSN-0074-1

lowlatency-5.4Ubuntu

Fixed in:5.4.0-26LSN-0074-1

oemUbuntu

Fixed in:4.15.0-1063LSN-0074-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

2.43%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch1

bugzilla.redhat.com

Third-Party Advisory7

Related Vulnerabilities

Other CWE-319 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-12710	High	8.0	77%	-	-
CVE-2024-25735	Critical	9.1	51%	-	Fix
CVE-2019-3993	High	7.5	46%	-	-
CVE-2017-5259	High	8.8	39%	-	-
CVE-2016-5649	Critical	9.8	27%	-	-
CVE-2021-39341	High	8.2	22%	-	-

Common questions

How do I fix CVE-2020-25645?

Published advisories record a fix for 122 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2020-25645 being actively exploited?

Not that we know of. CVE-2020-25645 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 83% of all scored CVEs.

How severe is CVE-2020-25645?

CVE-2020-25645 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2020-25645 affect?

Published advisories record a fix for linux (Debian), aws (Ubuntu), aws-fips (Ubuntu), azure (Ubuntu), and 118 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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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.