Is CVE-2021-38208 in the CISA KEV catalog?

No. CVE-2021-38208 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-38208?

CVE-2021-38208 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-38208?

CVE-2021-38208 has an EPSS score of 0.49% (39th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-38208?

Upgrade linux on debian 11 to 5.10.46-1 or later. Fixes are available for 29 affected products.

CVE & CISA-KEV Catalog

CVE-2021-38208

MEDIUM

5.5

CVSS v3

NVD

Description

net/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.46-1CVE-2021-38208

linuxUbuntu

Fixed in:4.4.0-222.255USN-5343-1

linux-awsUbuntu

Fixed in:4.4.0-1102.107USN-5343-1

Fixed in:4.4.0-1138.152USN-5343-1

linux-aws-5.8Ubuntu

Fixed in:5.8.0-1042.44~20.04.1USN-5050-1

linux-azure-5.8Ubuntu

Fixed in:5.8.0-1040.43~20.04.1USN-5050-1

linux-gcp-5.8Ubuntu

Fixed in:5.8.0-1039.41USN-5050-1

linux-image-4.4.0-1102-awsUbuntu

Fixed in:4.4.0-1102.107USN-5343-1

linux-image-4.4.0-1103-kvmUbuntu

Fixed in:4.4.0-1103.112USN-5343-1

linux-image-4.4.0-1138-awsUbuntu

Fixed in:4.4.0-1138.152USN-5343-1

linux-image-4.4.0-222-genericUbuntu

Fixed in:4.4.0-222.255~14.04.1USN-5343-1

Fixed in:4.4.0-222.255USN-5343-1

linux-image-4.4.0-222-lowlatencyUbuntu

Fixed in:4.4.0-222.255~14.04.1USN-5343-1

Fixed in:4.4.0-222.255USN-5343-1

linux-image-5.8.0-1038-oracleUbuntu

Fixed in:5.8.0-1038.39~20.04.1USN-5050-1

linux-image-5.8.0-1039-gcpUbuntu

Fixed in:5.8.0-1039.41USN-5050-1

linux-image-5.8.0-1040-azureUbuntu

Fixed in:5.8.0-1040.43~20.04.1USN-5050-1

linux-image-5.8.0-1042-awsUbuntu

Fixed in:5.8.0-1042.44~20.04.1USN-5050-1

linux-image-awsUbuntu

Fixed in:4.4.0.1102.100USN-5343-1

Fixed in:4.4.0.1138.143USN-5343-1

Fixed in:5.8.0.1042.44~20.04.14USN-5050-1

linux-image-azureUbuntu

Fixed in:5.8.0.1040.43~20.04.12USN-5050-1

linux-image-gcpUbuntu

Fixed in:5.8.0.1039.14USN-5050-1

linux-image-genericUbuntu

Fixed in:4.4.0.222.229USN-5343-1

linux-image-generic-lts-xenialUbuntu

Fixed in:4.4.0.222.193USN-5343-1

linux-image-kvmUbuntu

Fixed in:4.4.0.1103.101USN-5343-1

linux-image-lowlatencyUbuntu

Fixed in:4.4.0.222.229USN-5343-1

linux-image-lowlatency-lts-xenialUbuntu

Fixed in:4.4.0.222.193USN-5343-1

linux-image-oracleUbuntu

Fixed in:5.8.0.1038.39~20.04.14USN-5050-1

linux-image-virtualUbuntu

Fixed in:4.4.0.222.229USN-5343-1

linux-image-virtual-lts-xenialUbuntu

Fixed in:4.4.0.222.193USN-5343-1

linux-kvmUbuntu

Fixed in:4.4.0-1103.112USN-5343-1

linux-lts-xenialUbuntu

Fixed in:4.4.0-222.255~14.04.1USN-5343-1

linux-oracle-5.8Ubuntu

Fixed in:5.8.0-1038.39~20.04.1USN-5050-1

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.49%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Patch3

Third-Party Advisory3

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	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.