🛡️ CVE-2022-23084 — freebsd

🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-367 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2022-23084 is classified as CWE-367: Time-of-check Time-of-use Race Condition. The state checked and the state acted upon can differ, because it may change between the two steps.

Affected software

CVE-2022-23084 is recorded against 1 package.

  • freebsd

Timeline and source

Published on 15 February 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

security.freebsd.org
security.netapp.com
security.freebsd.org
security.netapp.com

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE CWE-367
Public Exploit ✅ No
Source NVD
Published 2024-02-15
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
freebsd — —

Similar Threats

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