Vulnerability Information
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Vulnerability Title
umtx Kernel panic or Use-After-Free
Vulnerability 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.
CVSS Information
N/A
Vulnerability Type
释放后使用
Vulnerability Title
FreeBSD 资源管理错误漏洞
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD 存在资源管理错误漏洞，该漏洞源于使用 UMTX_OP_SHM 的 UMTX_SHM_DESTROY 子请求并发删除某些匿名共享内存映射可能会导致表示映射的对象的引用计数减少太多次，从而导致过早释放。
CVSS Information
N/A
Vulnerability Type
N/A