HOMEVULNERABILITIESCVE-2022-0646
HIGH

CVE-2022-0646

CWE-459Published: February 18, 2022· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2022-0646 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product(s)
linux kernel
netapp16 product(s)
h410c firmwareh410ch300s firmwareh300sh500s firmwareh500sh700s firmwareh700sh300e firmwareh300eh500e firmwareh500e+4
Source: NVD CPE · 17 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://lore.kernel.org/all/20220211011552.1861886-1-jk%40codeconstruct.com.au
PATCHhttps://lore.kernel.org/all/20220211011552.1861886-1-jk%40codeconstruct.com.au
ADVISORYhttps://security.netapp.com/advisory/ntap-20220318-0006/
ADVISORYhttps://security.netapp.com/advisory/ntap-20220318-0006/

All References (4)

→
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

Quick Facts

CVE IDCVE-2022-0646
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-459
CISA KEVNo
Affected2 vendor(s)
PublishedFeb 18, 2022

Related CVEs (CWE-459)

CVE-2021-36205
9.8
CVE-2021-45706
9.8
CVE-2005-1744
9.8
CVE-2021-32928
9.8
CVE-2022-45347
9.8
CVE-2020-13451
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-0646 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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