All of lore.kernel.org
 help / color / mirror / Atom feed
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Steve Wise <swise-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org>
Cc: Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Hal Rosenstock
	<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [patch] RDMA/cxgb3: stack info leak in iwch_craete_cq()
Date: Thu, 25 Jul 2013 17:04:09 +0000	[thread overview]
Message-ID: <20130725170409.GB7026@elgon.mountain> (raw)

The "uresp.reserved" field isn't initialized.  It's at the end, of the
struct here so we don't need to copy it to the user.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index e87f220..b8e26f2 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -226,7 +226,7 @@ static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int ve
 			mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
 					     sizeof(struct t3_cqe));
 			uresp.memsize = mm->len;
-			resplen = sizeof uresp;
+			resplen = sizeof uresp - sizeof uresp.reserved;
 		}
 		if (ib_copy_to_udata(udata, &uresp, resplen)) {
 			kfree(mm);

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: Steve Wise <swise-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org>
Cc: Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Hal Rosenstock
	<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [patch] RDMA/cxgb3: stack info leak in iwch_craete_cq()
Date: Thu, 25 Jul 2013 20:04:09 +0300	[thread overview]
Message-ID: <20130725170409.GB7026@elgon.mountain> (raw)

The "uresp.reserved" field isn't initialized.  It's at the end, of the
struct here so we don't need to copy it to the user.

Signed-off-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index e87f220..b8e26f2 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -226,7 +226,7 @@ static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int ve
 			mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
 					     sizeof(struct t3_cqe));
 			uresp.memsize = mm->len;
-			resplen = sizeof uresp;
+			resplen = sizeof uresp - sizeof uresp.reserved;
 		}
 		if (ib_copy_to_udata(udata, &uresp, resplen)) {
 			kfree(mm);
--
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

             reply	other threads:[~2013-07-25 17:04 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-25 17:04 Dan Carpenter [this message]
2013-07-25 17:04 ` [patch] RDMA/cxgb3: stack info leak in iwch_craete_cq() Dan Carpenter
     [not found] ` <20130725170409.GB7026-mgFCXtclrQlZLf2FXnZxJA@public.gmane.org>
2013-07-25 18:43   ` Steve Wise
2013-07-25 18:43     ` Steve Wise
     [not found]     ` <51F171D0.7050204-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2013-07-26  8:47       ` Dan Carpenter
2013-07-26  8:47         ` Dan Carpenter
2013-07-29 19:19     ` [patch v2] " Dan Carpenter
2013-07-29 19:19       ` Dan Carpenter
     [not found]       ` <20130729191914.GA11977-mgFCXtclrQlZLf2FXnZxJA@public.gmane.org>
2013-07-29 19:26         ` Steve Wise
2013-07-29 19:26           ` Steve Wise

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20130725170409.GB7026@elgon.mountain \
    --to=dan.carpenter@oracle.com \
    --cc=hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
    --cc=kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
    --cc=sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
    --cc=swise-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.