Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The kernel module loader in Linux kernel 2.2.x before 2.2.25, and 2.4.x before 2.4.21, allows local users to gain root privileges by using ptrace to attach to a child process that is spawned by the kernel.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux Kernel kmod/ptrace竞争条件权限提升漏洞
Vulnerability Description
Linux是极为流行的开放源代码的操作系统内核。 Linux kernel/kmod.c程序以不安全的方式建立内核线程，本地攻击者利用这个漏洞通过竞争条件攻击方法获得root用户权限。 当进程请求的功能在模块中的情况下，内核就会派生一子进程，并把子进程的euid和egid设置为0并调用execve("/sbin/modprobe")。问题是在euid更改到子进程前可以被ptrace()挂接调试，因此攻击者可以插入任意代码到进程中并以root用户的权限运行。 要利用此漏洞，必须需要如下条件： 1、Linux
CVSS Information
N/A
Vulnerability Type
N/A