CVE-2024-43102

critical

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 c…

Vendor / product: Freebsd — freebsd

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.

CVSS

10.0

10.0 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2024-09-05 05:15

Modified: 2026-11-04 00:17

NVD status: Modified

Last synced 1 day ago

Verified against the source API 2026-11-04 00:25 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

freebsd / freebsd ≥13.0 <13.3, 13.3, 13.4, 14.0, 14.1

Weakness classification (CWE)

CWE-416 CWE-911

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://security.freebsd.org/advisories/FreeBSD-SA-24:14.umtx.asc

References

https://security.freebsd.org/advisories/FreeBSD-SA-24:14.umtx.asc secteam@freebsd.org
https://security.netapp.com/advisory/ntap-20240916-0001/ af854a3a-2127-422b-91ae-364da2661108

Data sources

NVD CVE API 2.0 — fetched 2026-11-04 00:25 UTC · record ↗

Learn the basics

Understanding CVEs and CVSS Scores

CVE-2024-43102

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

Learn the basics

Related CVEs