CVE-2019-13272

CVE-2019-13272是一个Linux内核漏洞，该漏洞存在于ptrace_link函数中。这个函数在Linux执行PTRACE_TRACEME函数时，会获得对父进程凭据的RCU引用，并将该引用指向get_cred函数。然而，由于struct cred对象的生存周期规则，不允许无条件地将RCU引用转换为稳定引用。这个漏洞可以被利用来以特权身份执行恶意代码或提升权限。

关于该漏洞的更多详细信息和修复情况，请参考以下链接： <span class="em">1</span><span class="em">2</span><span class="em">3</span>
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