VULNERABILITY INTELLIGENCE

CVE-2024-43102

CVSS score10 CRITICAL
EPSS probability0.68%
CISA KEVNot currently listed
Published2024-09-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • secteam@freebsd.org: CWE-416
  • nvd@nist.gov: CWE-416

Primary references