SMB3: Fix length checking of SMB3.11 negotiate request

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The length checking for SMB3.11 negotiate request includes
"negotiate contexts" which caused a buffer validation problem
and a confusing warning message on SMB3.11 mount e.g.:

     SMB2 server sent bad RFC1001 len 236 not 170

Fix the length checking for SMB3.11 negotiate to account for
the new negotiate context so that we don't log a warning on
SMB3.11 mount by default but do log warnings if lengths returned
by the server are incorrect.

CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>

...

This commit is contained in:

Steve French 2018-04-08 16:14:31 -05:00

parent f2f176b418

commit 136ff1b4b6

2 changed files with 46 additions and 0 deletions

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39

fs/cifs/smb2misc.c

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7

fs/cifs/smb2pdu.h

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