Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 拒绝服务漏洞
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。NFSv4 implementation是其中的一个分布式文件系统协议。 Linux kernel 4.0.5之前版本的fs/namespace.c文件中的‘collect_mounts’函数存在安全漏洞，该漏洞源于程序没有正确考虑‘collect_mounts’函数可能在路径取消挂载后执行。本地攻击者可借助MNT_DETACH umount2系统调用的user-namespace root访问权限利用该漏洞造成拒绝服
CVSS Information
N/A
Vulnerability Type
N/A