CVE-2021-43267

Critical

An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.

Package Linux Kernel
Published 2021-11-02
Last modified 2024-11-21
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

9.8

out of 10
Critical
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-1284

CVE-2021-43267 is classified as CWE-1284

See CWE-1284 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-43267 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2021-43267?

    CVE-2021-43267 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10 . CVE-2021-43267 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-43267?

    CVE-2021-43267 has a CVSS score of 9.8 out of 10, rated Critical severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2021-43267?

    No patch is currently available for CVE-2021-43267. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2021-43267 actively exploited?

    No — CVE-2021-43267 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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