CVE-2022-23086

Local kernel code execution via undersized ioctl buffers

Published Feb 15, 2024 · Updated Feb 13, 2025

Heap buffer overflow in the FreeBSD kernel allows local users to execute arbitrary code with kernel privileges via MPT device ioctls. The mpr, mps, and mpt *_CFG_PAGE handlers allocate a caller-sized heap buffer, then copy a fixed-size header without ensuring that the allocation can hold it. Access to the relevant device node, limited to root and operator-group members by default, is required; exploitation overwrites adjacent heap data and elevates privileges.

CVSS severity7.8
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in the FreeBSD kernel allows local users to execute arbitrary code with kernel privileges via MPT device ioctls. The mpr, mps, and mpt *_CFG_PAGE handlers allocate a caller-sized heap buffer, then copy a fixed-size header without ensuring that the allocation can hold it. Access to the relevant device node, limited to root and operator-group members by default, is required; exploitation overwrites adjacent heap data and elevates privileges.

The record

CVE
CVE-2022-23086
Published
Feb 15, 2024
Updated
Feb 13, 2025
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-787, CWE-122, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.3 <12.0_p5
  2. Affected versionversion=12.3-RELEASE <p5
  3. Affected versionversion=13.0 <13.0_p11
  4. Affected versionversion=13.0-RELEASE <p11
  5. Affected versionversion=13.1-rc1 <13.1_p1
  6. Affected versionversion=13.1-RC1 <p1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=12.3 <12.0_p5; version=12.3-RELEASE <p5; version=13.0 <13.0_p11; version=13.0-RELEASE <p11; version=13.1-rc1 <13.1_p1; version=13.1-RC1 <p1

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.2Trend Micro Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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