CIFS: Fix a possible invalid memory access in smb2_query_symlink()

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[ Upstream commit 7893242e24 ]

During following a symbolic link we received err_buf from SMB2_open().
While the validity of SMB2 error response is checked previously
in smb2_check_message() a symbolic link payload is not checked at all.
Fix it by adding such checks.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

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Pavel Shilovsky 2016-07-24 10:37:38 +03:00 • committed by Sasha Levin

parent a10e07c731

commit 1eaac1744e

1 changed files with 29 additions and 1 deletions

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fs/cifs/smb2ops.c

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