Vulnerability Details CVE-2024-43102
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.01
EPSS Ranking 75.4%
CVSS Severity
CVSS v3 Score 10.0
References
Products affected by CVE-2024-43102
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cpe:2.3:o:freebsd:freebsd:13.0
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cpe:2.3:o:freebsd:freebsd:13.1
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cpe:2.3:o:freebsd:freebsd:13.2
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cpe:2.3:o:freebsd:freebsd:13.3
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cpe:2.3:o:freebsd:freebsd:13.4
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cpe:2.3:o:freebsd:freebsd:14.0
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cpe:2.3:o:freebsd:freebsd:14.1