CVE-2021-38208

Name: CVE-2021-38208
Creator: NVD / NIST
Published: 2021-08-08T20:15:07.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.49%

Last modified Jun 17, 2026

CVE-2021-38208 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.49%

38.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 5.12.10

References

http://www.openwall.com/lists/oss-security/2021/08/17/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/17/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/24/2Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1992810Issue Tracking, Patch, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/4ac06a1e013cf5fdd963317ffd3b968560f33bbaExploit, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/17/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/17/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/24/2Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1992810Issue Tracking, Patch, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/4ac06a1e013cf5fdd963317ffd3b968560f33bbaExploit, Patch, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-38208?

How severe is CVE-2021-38208?

CVE-2021-38208 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2021-38208?

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-2021-38208?

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

Scan your code now

Source: NVD / NIST