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  4. CVE 2024 43102 umtx kernel panic or use after free
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Back to active CVEs
Critical · CVSS 9.8CVE-2024-43102

umtx Kernel panic or Use-After-FreeCVE-2024-43102

Answer in brief

CVE-2024-43102 records a Critical severity (CVSS 9.8) vulnerability in umtx Kernel panic or Use-After-Free. The current sources do not mark it as known exploited. The current feed maps freebsd/freebsd (generic), FreeBSD/FreeBSD (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 5, 2024Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Nov 3, 2026Material review Nov 3, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps freebsd/freebsd (generic), FreeBSD/FreeBSD (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
freebsd/freebsdgeneric>=14.1 <14.1_p4 || >=14.0 <14.0_p10 || >=13.3 <13.3_p614.1_p4, 14.0_p10, 13.3_p6
FreeBSD/FreeBSDgeneric>=14.1-RELEASE <p4 || >=14.0-RELEASE <p10 || >=13.3-RELEASE <p6p4, p10, p6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for freebsd/freebsd, FreeBSD/FreeBSD.
  2. 2Review the reported fix. Update freebsd/freebsd to 14.1_p4; FreeBSD/FreeBSD to p4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 5, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 3, 2026

Sources and claim methodology

  • Source referencesecurity.freebsd.org
  • Source referencesecurity.netapp.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Use-after-free vulnerability in GitHub Enterprise Server allowed remote code execution in the Git serviceAlso CWE-416

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-416, CWE-911
Source
CVE List V5
Source checked
Nov 3, 2026
References
2 linked sources
Open source record