From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Subject: [patch] IB/hfi1: info leak in get_ctxt_info() Date: Wed, 16 Sep 2015 09:21:42 +0300 Message-ID: <20150916062142.GB21542@mwanda> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Mike Marciniszyn Cc: Doug Ledford , Sean Hefty , Hal Rosenstock , Greg Kroah-Hartman , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b@public.gmane.org, kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org The cinfo struct has a hole after the last struct member so we need to zero it out. Otherwise we don't disclose some uninitialized stack data. Signed-off-by: Dan Carpenter diff --git a/drivers/staging/rdma/hfi1/file_ops.c b/drivers/staging/rdma/hfi1/file_ops.c index 4698617..2c43ca5 100644 --- a/drivers/staging/rdma/hfi1/file_ops.c +++ b/drivers/staging/rdma/hfi1/file_ops.c @@ -1181,6 +1181,7 @@ static int get_ctxt_info(struct file *fp, void __user *ubase, __u32 len) struct hfi1_filedata *fd = fp->private_data; int ret = 0; + memset(&cinfo, 0, sizeof(cinfo)); ret = hfi1_get_base_kinfo(uctxt, &cinfo); if (ret < 0) goto done; -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html