Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 3a2789e8 authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
Browse files

NFSD: prevent integer overflow on 32 bit systems 



commit 23a9dbbe0faf124fc4c139615633b9d12a3a89ef upstream.

On a 32 bit system, the "len * sizeof(*p)" operation can have an
integer overflow.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9f0f048c

include/linux/sunrpc/xdr.h

+2 −0
Original line number Diff line number Diff line
@@ -509,6 +509,8 @@ xdr_stream_decode_uint32_array(struct xdr_stream *xdr, 


	if (unlikely(xdr_stream_decode_u32(xdr, &len) < 0))

		return -EBADMSG;

	if (len > SIZE_MAX / sizeof(*p))

		return -EBADMSG;

	p = xdr_inline_decode(xdr, len * sizeof(*p));

	if (unlikely(!p))

		return -EBADMSG;