CVE-2021-3483

Name: CVE-2021-3483
Creator: NVD / NIST
Published: 2021-05-17T12:15:07.523+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2021-3483 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.36%

27.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 5.12	—
Linux	Linux Kernel	5.12	Rc1
Debian	Debian Linux	9.0	—
Netapp	Cloud Backup	All versions	—
Netapp	H300s Firmware	All versions	—
Netapp	H500s Firmware	All versions	—
Netapp	H700s Firmware	All versions	—
Netapp	H300e Firmware	All versions	—
Netapp	H500e Firmware	All versions	—
Netapp	H700e Firmware	All versions	—
Netapp	H410s Firmware	All versions	—
Netapp	H410c Firmware	All versions	—

References

http://www.openwall.com/lists/oss-security/2021/04/07/1Mailing List, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1948045Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210629-0002/Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/04/07/1Mailing List, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1948045Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210629-0002/Third Party Advisory

Timeline

Published: May 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3483?

How severe is CVE-2021-3483?

CVE-2021-3483 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3483?

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-2021-3483?

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

Scan your code now

Source: NVD / NIST