How severe is CVE-2022-23084?

CVE-2022-23084 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-23084 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-23084?

CVE-2022-23084 primarily affects Freebsd. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-23084?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2022-23084 have an EU (EUVD) identifier?

Yes. CVE-2022-23084 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-28189.

When was CVE-2022-23084 published?

CVE-2022-23084 was published on 2024-02-15 and last updated on 2026-06-17.

CVE-2022-23084

CVE-2022-23084 is a high-severity vulnerability in Freebsd with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-367.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2022-28189
Weakness: CWE-367
Affected product: Freebsd
Published: 2024-02-15
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-23084?: 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 severe is CVE-2022-23084?: CVE-2022-23084 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-23084 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-23084?: CVE-2022-23084 primarily affects Freebsd. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-23084?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2022-23084 have an EU (EUVD) identifier?: Yes. CVE-2022-23084 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-28189.
When was CVE-2022-23084 published?: CVE-2022-23084 was published on 2024-02-15 and last updated on 2026-06-17.

References

Affected products (28)

cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.3:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.3:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.3:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.3:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.3:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:beta1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:beta2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:beta3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:beta3-p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:beta4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p10:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p6:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p7:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p8:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:p9:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:rc1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:rc2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:rc4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:rc5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.0:rc5-p1:*:*:*:*:*:*

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