CVE-2022-23084

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

The total size of the user-provided nmreq to nmreq_copyin() was first computed and then trusted during the copyin. This time-of-check to time-of-use bug could lead to kernel memory corruption.

On systems configured to include netmap in their devfs_ruleset, a privileged process running in a jail can affect the host environment.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-367

Affected software

Vendor	Product	Versions
FreeBSD	FreeBSD	>= 13.1-RC1, < p1; >= 13.0-RELEASE, < p11; >= 12.3-RELEASE, < p5
freebsd	freebsd	>= 13.1-rc1, < p1; >= 13.0-release, < p11; >= 12.3-release, < p5

References

https://security.freebsd.org/advisories/FreeBSD-SA-22:04.netmap.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20240419-0003/Third Party Advisory
https://security.freebsd.org/advisories/FreeBSD-SA-22:04.netmap.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20240419-0003/Third Party Advisory

Timeline

Published: Feb 15, 2024
Last modified: Jun 17, 2026
NVD status: Analyzed

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