# CVE-2024-43102

## Summary

- **CVE ID:** CVE-2024-43102
- **Severity:** UNKNOWN
- **CVSS Score:** 0
- **CWE:** CWE-416, CWE-911
- **Published:** Sep 5, 2024
- **Last Modified:** Mar 13, 2026

## Description

Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of UMTX_OP_SHM can lead to decreasing the reference count of the object representing the mapping too many times, causing it to be freed too early.

A malicious code exercizing the UMTX_SHM_DESTROY sub-request in parallel can panic the kernel or enable further Use-After-Free attacks, potentially including code execution or Capsicum sandbox escape.

## Affected Products

- FreeBSD — FreeBSD (14.1-RELEASE)
- FreeBSD — FreeBSD (14.0-RELEASE)
- FreeBSD — FreeBSD (13.3-RELEASE)

## References

- [CNA](https://security.freebsd.org/advisories/FreeBSD-SA-24:14.umtx.asc)
- [CVE](https://security.netapp.com/advisory/ntap-20240916-0001/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.68%
- **EPSS Percentile:** 50.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._