How severe is CVE-2022-23091?

CVE-2022-23091 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2022-23091 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-23091?

CVE-2022-23091 primarily affects Freebsd. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-23091?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2022-23091 have an EU (EUVD) identifier?

Yes. CVE-2022-23091 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-28196.

When was CVE-2022-23091 published?

CVE-2022-23091 was published on 2024-02-15 and last updated on 2026-06-17.

CVE-2022-23091

CVE-2022-23091 is a medium-severity vulnerability in Freebsd with a CVSS 3.x base score of 4.0. 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-401.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2022-28196
Weakness: CWE-401
Affected product: Freebsd
Published: 2024-02-15
Last modified: 2026-06-17

Description

A particular case of memory sharing is mishandled in the virtual memory system. This is very similar to SA-21:08.vm, but with a different root cause. An unprivileged local user process can maintain a mapping of a page after it is freed, allowing that process to read private data belonging to other processes or the kernel.

Frequently asked questions

What is CVE-2022-23091?: A particular case of memory sharing is mishandled in the virtual memory system. This is very similar to SA-21:08.vm, but with a different root cause. An unprivileged local user process can maintain a mapping of a page after it is freed, allowing that process to read private data belonging to other processes or the kernel.
How severe is CVE-2022-23091?: CVE-2022-23091 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2022-23091 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-23091?: CVE-2022-23091 primarily affects Freebsd. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-23091?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2022-23091 have an EU (EUVD) identifier?: Yes. CVE-2022-23091 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-28196.
When was CVE-2022-23091 published?: CVE-2022-23091 was published on 2024-02-15 and last updated on 2026-06-17.

References

Affected products (33)

cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.3:beta1:*:*:*:*:*:*
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:12.3:p5:*:*:*:*:*:*
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:p11:*:*:*:*:*:*
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:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:b1-p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:b2-p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:rc1-p1:*:*:*:*:*:*

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