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CVE-2022-23091

Memory disclosure by stale virtual memory mapping

MEDIUM
4
CVSS Score
Published: February 15, 2024 at 05:11 AM UTC
Updated: June 17, 2026 at 04:29 AM UTC
1 product affected across 1 vendorFreeBSD

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Severity
MEDIUM4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FreeBSD· Freebsd
95%
v < 12.312.3-RELEASE ≤ v < p613.0-RELEASE ≤ v < p1213.1-RELEASE ≤ v < p112.3 beta112.3 p112.3 p212.3 p312.3 p412.3 p512.3-RELEASE13.013.0 beta113.0 beta213.0 beta313.0 beta3-p113.0 beta413.0 p113.0 p1013.0 p1113.0 p213.0 p313.0 p413.0 p513.0 p613.0 p713.0 p813.0 p913.0 rc113.0 rc213.0 rc313.0 rc413.0 rc513.0 rc5-p113.0-RELEASE13.1 b1-p113.1 b2-p213.1 rc1-p113.1-RELEASE
Affected range stops below 12.3, so it looks safe — our inference, not a vendor statement
Affected range stops below p1, so it looks safe — our inference, not a vendor statement
Affected range stops below p12, so it looks safe — our inference, not a vendor statement
Affected range stops below p6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: [email protected]
https://security.freebsd.org/advisories/FreeBSD-SA-22:11.vm.asc
Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20240415-0008/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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