Is CVE-2018-20511 in the CISA KEV catalog?

No. CVE-2018-20511 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-20511?

CVE-2018-20511 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2018-20511?

CVE-2018-20511 has an EPSS score of 0.45% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-20511?

Upgrade linux on debian 11 to 4.18.20-1 or later. Fixes are available for 42 affected products.

CVE & CISA-KEV Catalog

CVE-2018-20511

MEDIUM

5.5

CVSS v3

NVD

Description

An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.

CWE-200Information Exposure

How to fix

Remediation Available

linuxDebian

Fixed in:4.18.20-1CVE-2018-20511

linuxUbuntu

Fixed in:4.15.0-58.64USN-4094-1

linux-awsUbuntu

Fixed in:4.15.0-1047.49USN-4118-1

linux-aws-hweUbuntu

Fixed in:4.15.0-1047.49~16.04.1USN-4118-1

linux-azureUbuntu

Fixed in:4.15.0-1055.60USN-4094-1

linux-gcpUbuntu

Fixed in:4.15.0-1040.42~16.04.1USN-4094-1

Fixed in:4.15.0-1040.42USN-4094-1

linux-gke-4.15Ubuntu

Fixed in:4.15.0-1040.42USN-4094-1

linux-hweUbuntu

Fixed in:4.15.0-58.64~16.04.1USN-4094-1

linux-image-4.15.0-1021-oracleUbuntu

Fixed in:4.15.0-1021.23~16.04.1USN-4094-1

Fixed in:4.15.0-1021.23USN-4094-1

linux-image-4.15.0-1040-gcpUbuntu

Fixed in:4.15.0-1040.42~16.04.1USN-4094-1

Fixed in:4.15.0-1040.42USN-4094-1

linux-image-4.15.0-1040-gkeUbuntu

Fixed in:4.15.0-1040.42USN-4094-1

linux-image-4.15.0-1042-kvmUbuntu

Fixed in:4.15.0-1042.42USN-4094-1

linux-image-4.15.0-1043-raspi2Ubuntu

Fixed in:4.15.0-1043.46USN-4094-1

linux-image-4.15.0-1047-awsUbuntu

Fixed in:4.15.0-1047.49~16.04.1USN-4118-1

Fixed in:4.15.0-1047.49USN-4118-1

linux-image-4.15.0-1050-oemUbuntu

Fixed in:4.15.0-1050.57USN-4094-1

linux-image-4.15.0-1060-snapdragonUbuntu

Fixed in:4.15.0-1060.66USN-4094-1

linux-image-4.15.0-58-genericUbuntu

Fixed in:4.15.0-58.64~16.04.1USN-4094-1

Fixed in:4.15.0-58.64USN-4094-1

linux-image-4.15.0-58-generic-lpaeUbuntu

Fixed in:4.15.0-58.64~16.04.1USN-4094-1

Fixed in:4.15.0-58.64USN-4094-1

linux-image-4.15.0-58-lowlatencyUbuntu

Fixed in:4.15.0-58.64~16.04.1USN-4094-1

Fixed in:4.15.0-58.64USN-4094-1

linux-image-awsUbuntu

Fixed in:4.15.0.1047.46USN-4118-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1047.47USN-4118-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1040.54USN-4094-1

Fixed in:4.15.0.1040.42USN-4094-1

linux-image-genericUbuntu

Fixed in:4.15.0.58.60USN-4094-1

linux-image-generic-hwe-16.04Ubuntu

Fixed in:4.15.0.58.79USN-4094-1

linux-image-generic-lpaeUbuntu

Fixed in:4.15.0.58.60USN-4094-1

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

Fixed in:4.15.0.58.79USN-4094-1

linux-image-gkeUbuntu

Fixed in:4.15.0.1040.54USN-4094-1

Fixed in:4.15.0.1040.43USN-4094-1

linux-image-gke-4.15Ubuntu

Fixed in:4.15.0.1040.43USN-4094-1

linux-image-kvmUbuntu

Fixed in:4.15.0.1042.42USN-4094-1

linux-image-lowlatencyUbuntu

Fixed in:4.15.0.58.60USN-4094-1

linux-image-lowlatency-hwe-16.04Ubuntu

Fixed in:4.15.0.58.79USN-4094-1

linux-image-oemUbuntu

Fixed in:4.15.0.58.79USN-4094-1

Fixed in:4.15.0.1050.54USN-4094-1

linux-image-oracleUbuntu

Fixed in:4.15.0.1021.15USN-4094-1

Fixed in:4.15.0.1021.24USN-4094-1

linux-image-raspi2Ubuntu

Fixed in:4.15.0.1043.41USN-4094-1

linux-image-snapdragonUbuntu

Fixed in:4.15.0.1060.63USN-4094-1

linux-image-virtualUbuntu

Fixed in:4.15.0.58.60USN-4094-1

linux-image-virtual-hwe-16.04Ubuntu

Fixed in:4.15.0.58.79USN-4094-1

linux-kvmUbuntu

Fixed in:4.15.0-1042.42USN-4094-1

linux-oemUbuntu

Fixed in:4.15.0-1050.57USN-4094-1

linux-oracleUbuntu

Fixed in:4.15.0-1021.23~16.04.1USN-4094-1

Fixed in:4.15.0-1021.23USN-4094-1

linux-raspi2Ubuntu

Fixed in:4.15.0-1043.46USN-4094-1

linux-snapdragonUbuntu

Fixed in:4.15.0-1060.66USN-4094-1

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

Exploit Intelligence

0.45%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Patch3

Vendor Advisory1

cdn.kernel.org

Third-Party Advisory2

Other references3

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	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.