CVE-2021-38202

Name: CVE-2021-38202
Creator: NVD / NIST
Published: 2021-08-08T20:15:07.18+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.19%

Last modified Jun 17, 2026

CVE-2021-38202 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 3.19% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

3.19%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 5.13.4
Netapp	Hci Bootstrap Os	All versions
Netapp	Hci Management Node	All versions
Netapp	Solidfire	All versions
Netapp	Element Software	All versions

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/7b08cf62b1239a4322427d677ea9363f0ab677c6Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210902-0010/Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/7b08cf62b1239a4322427d677ea9363f0ab677c6Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210902-0010/Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-265688.html

Timeline

Published: Aug 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-38202?

How severe is CVE-2021-38202?

CVE-2021-38202 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-38202?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-38202?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST