CVE-2022-0646

Name: CVE-2022-0646
Creator: NVD / NIST
Published: 2022-02-18T18:15:11.783+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2022-0646 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw use after free in the Linux kernel Management Component Transport Protocol (MCTP) subsystem was found in the way user triggers cancel_work_sync after the unregister_netdev during removing device. A local user could use this flaw to crash the system or escalate their privileges on the system. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

A flaw use after free in the Linux kernel Management Component Transport Protocol (MCTP) subsystem was found in the way user triggers cancel_work_sync after the unregister_netdev during removing device. A local user could use this flaw to crash the system or escalate their privileges on the system. It is actual from Linux Kernel 5.17-rc1 (when mctp-serial.c introduced) till 5.17-rc5.

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

0.34%

25.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	5.17	Rc1
Netapp	H410c Firmware	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	—

References

https://lore.kernel.org/all/20220211011552.1861886-1-jk%40codeconstruct.com.auMailing List, Patch
https://security.netapp.com/advisory/ntap-20220318-0006/Third Party Advisory
https://lore.kernel.org/all/20220211011552.1861886-1-jk%40codeconstruct.com.auMailing List, Patch
https://security.netapp.com/advisory/ntap-20220318-0006/Third Party Advisory

Timeline

Published: Feb 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-0646?

How severe is CVE-2022-0646?

CVE-2022-0646 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2022-0646?

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-2022-0646?

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

Scan your code now

Source: NVD / NIST