CVE-2021-43267

Public Exploit

Description

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 72.71% Top 5%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/fa40d9734a57bcbfa79a280189799f76c88f7bb0 third party advisory patch
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.16 mailing list release notes vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVWL7HZV5T5OEKJPO2D67RMFMKBBXGGB/ vendor advisory
https://security.netapp.com/advisory/ntap-20211125-0002/ third party advisory
http://www.openwall.com/lists/oss-security/2022/02/10/1 mailing list exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-43267?
CVE-2021-43267 has been scored as a critical severity vulnerability.
How to fix CVE-2021-43267?
To fix CVE-2021-43267, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43267 being actively exploited in the wild?
It is possible that CVE-2021-43267 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~73% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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