Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call. NOTE: the vendor states "there is no kernel bug here.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
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 4.4.1及之前版本的kernel/ptrace.c文件中存在安全漏洞，该漏洞源于程序没有正确处理uid和gid映射。本地攻击者可通过建立用户命名空间，等待root进程使用不安全的uid或gid进入该命名空间后使用ptrace系统调用，利用该漏洞获取权限。（说明：厂商声明“此处不存在内核错误”）
CVSS Information
N/A
Vulnerability Type
N/A