What is CVE-2021-38202?

CVE-2021-38202 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, classified as a Out-of-bounds Read flaw (CWE-125). CVE-2021-38202 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-38202?

CVE-2021-38202 has a CVSS score of 7.5 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-38202?

No patch is currently available for CVE-2021-38202. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-38202 actively exploited?

CVE-2021-38202 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2021-38202

High

fs/nfsd/trace.h in the Linux kernel before 5.13.4 might allow remote attackers to cause a denial of service (out-of-bounds read in strlen) by sending NFS traffic when the trace event framework is being used for nfsd.

Package Linux Kernel

Published 2021-08-08

Last modified 2026-05-12

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.5

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2021-38202 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-38202 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Security
https://security.netapp.com/advisory/ntap-20210902-0010/

Third Party Advisory
Cert-Portal
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Kernel patch commit
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/7b08cf62b1239a4322427d677ea9363f0ab677c6
Patch

Details

CVE ID CVE-2021-38202

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2021-08-08

Modified 2026-05-12

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-38202?

CVE-2021-38202 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . CVE-2021-38202 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-38202?

CVE-2021-38202 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-38202?

No patch is currently available for CVE-2021-38202. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-38202 actively exploited?

No — CVE-2021-38202 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. View CWE-125 on MITRE CWE →