CVE-2024-43102

Summary

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 Software

Weaknesses

• CWE-416: CWE-416 Use After Free
• CWE-911: CWE-911 Improper Update of Reference Count

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

CVE Program Container

Additional References

• https://security.netapp.com/advisory/ntap-20240916-0001/

References

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

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