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Commit c773c4fb authored by Nicholas Mc Guire's avatar Nicholas Mc Guire Committed by Greg Kroah-Hartman
Browse files

cifs: check kmalloc before use 



commit 126c97f4d0d1b5b956e8b0740c81a2b2a2ae548c upstream.

The kmalloc was not being checked - if it fails issue a warning
and return -ENOMEM to the caller.

Signed-off-by: default avatarNicholas Mc Guire <hofrat@osadl.org>
Fixes: b8da344b ("cifs: dynamic allocation of ntlmssp blob")
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
Reviewed-by: default avatarPavel Shilovsky <pshilov@microsoft.com>
cc: Stable <stable@vger.kernel.org>`
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fbd314e2

fs/cifs/sess.c

+6 −0
Original line number Diff line number Diff line
@@ -398,6 +398,12 @@ int build_ntlmssp_auth_blob(unsigned char **pbuffer, 
		goto setup_ntlmv2_ret;

	}

	*pbuffer = kmalloc(size_of_ntlmssp_blob(ses), GFP_KERNEL);

	if (!*pbuffer) {

		rc = -ENOMEM;

		cifs_dbg(VFS, "Error %d during NTLMSSP allocation\n", rc);

		*buflen = 0;

		goto setup_ntlmv2_ret;

	}

	sec_blob = (AUTHENTICATE_MESSAGE *)*pbuffer;



	memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8);