Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux Kernel sock_sendpage()函数空指针引用漏洞
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。 在Linux内核中，每个套接字都有一个名为proto_ops的相关操作结构，其中包含有用于实现各种功能(如接受、绑定、关闭等)的函数指针。如果对特定套接字的操作没有实现，就应将相关的函数指针指向预定义的存根。例如，如果没有定义accept功能，就应指向sock_no_accept()。但是，如果某些指针没有初始化，就可能出现其他情况。例如，soc
CVSS Information
N/A
Vulnerability Type
N/A