K 10
svn:author
V 3
cem
K 8
svn:date
V 27
2017-09-29T15:53:26.085539Z
K 7
svn:log
V 519
netsmb: Fix buggy/racy smb_strdupin()

smb_strdupin() tried to roll a copyin() based strlen to allocate a buffer
and then blindly copyin that size.  Of course, a malicious user program
could simultaneously manipulate the buffer, resulting in a non-terminated
string being copied.

Later assumptions in the code rely upon the string being nul-terminated.

Just use copyinstr() and drop the racy sizing.

PR:		222687
Reported by:	Meng Xu <meng.xu AT gatech.edu>
Security:	possible local DoS
Sponsored by:	Dell EMC Isilon

END