Is CVE-2020-25643 in the CISA KEV catalog?

No. CVE-2020-25643 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-25643?

CVE-2020-25643 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2020-25643?

CVE-2020-25643 has an EPSS score of 3.29% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-25643?

Upgrade linux on debian 11 to 5.8.14-1 or later. Fixes are available for 107 affected products.

CVE & CISA-KEV Catalog

CVE-2020-25643

HIGHEPSS 87th pctl

7.2

CVSS v3

NVD

Description

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CWE-20Improper Input Validation

How to fix

Remediation Available

linuxDebian

Fixed in:5.8.14-1CVE-2020-25643

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-5.6.0-1048-oemUbuntu

Fixed in:5.6.0-1048.52USN-4752-1

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:5.6.0.1048.44USN-4752-1

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:5.6.0-1048.52USN-4752-1

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

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 RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.29%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch2

Third-Party Advisory8

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	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.