Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The shmat system call in the System V Shared Memory interface for FreeBSD 5.2 and earlier, NetBSD 1.3 and earlier, and OpenBSD 2.6 and earlier, does not properly decrement a shared memory segment's reference count when the vm_map_find function fails, which could allow local users to gain read or write access to a portion of kernel memory and gain privileges.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
BSD Kernel SHMAT系统调用权限提升漏洞
Vulnerability Description
BSD系统中的shmat(2)函数映射一个或多个进程/线程共享内存段中，之前可通过shmget(2)函数建立。 shmat(2)系统调用存在编程错误，可导致共享内存段参考计数器错误的增长，可能造成权限提升。 这个函数在sysv_shm.c文件中实现： -- sysv_shm.c lines 317-322 -- vm_object_reference(shm_handle->shm_object); rv = vm_map_find(&p->p_vmspace->vm_map， shm_handle->s
CVSS Information
N/A
Vulnerability Type
N/A