CVE-2021-29627

Description

In FreeBSD 13.0-STABLE before n245050, 12.2-STABLE before r369525, 13.0-RC4 before p0, and 12.2-RELEASE before p6, listening socket accept filters implementing the accf_create callback incorrectly freed a process supplied argument string. Additional operations on the socket can lead to a double free or use after free.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.98% Top 20%
Vendor Advisory FreeBSD.org
Affected: n/a FreeBSD
Published at:
Updated at:

References

Link Tags
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:09.accept_filter.asc vendor advisory
https://security.netapp.com/advisory/ntap-20210423-0007/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-29627?
CVE-2021-29627 has been scored as a high severity vulnerability.
How to fix CVE-2021-29627?
To fix CVE-2021-29627, 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-2021-29627 being actively exploited in the wild?
It is possible that CVE-2021-29627 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29627?
CVE-2021-29627 affects n/a FreeBSD.
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