Security Advisory

CVE-2024-43102

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2024-09-05 04:54:52

Last updated 2024-09-16 21:02:44

Assigner freebsd

State PUBLISHED

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.

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