diff options
| author | Pavel Shilovsky <pshilov@microsoft.com> | 2017-08-24 15:16:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-07 08:32:20 +0200 |
| commit | 79c22326c2c05462b932f4dd21b6ba9a2961b29f (patch) | |
| tree | 04109ed0d800978108db56cdcf8e53019e0ae452 | |
| parent | 9b5ae8b0989251afdc61a0a29a1dfa639602e200 (diff) | |
CIFS: Fix maximum SMB2 header size
commit 9e37b1784f2be9397a903307574ee565bbadfd75 upstream.
Currently the maximum size of SMB2/3 header is set incorrectly which
leads to hanging of directory listing operations on encrypted SMB3
connections. Fix this by setting the maximum size to 170 bytes that
is calculated as RFC1002 length field size (4) + transform header
size (52) + SMB2 header size (64) + create response size (56).
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/cifs/smb2pdu.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index e3188abdafd0..05c322d9e1e7 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -82,8 +82,8 @@ #define NUMBER_OF_SMB2_COMMANDS 0x0013 -/* BB FIXME - analyze following length BB */ -#define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (2*24 wct) + 2 bct + 2 pad */ +/* 4 len + 52 transform hdr + 64 hdr + 56 create rsp */ +#define MAX_SMB2_HDR_SIZE 0x00b0 #define SMB2_PROTO_NUMBER __constant_cpu_to_le32(0x424d53fe) |