From: Vasiliy Kulikov <segooon-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Roland Dreier <rolandd-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>,
Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Hal Rosenstock
<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Alex Chiang <achiang-VXdhtT5mjnY@public.gmane.org>,
Andi Kleen <ak-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Greg Kroah-Hartman <gregkh-l3A5Bk7waGM@public.gmane.org>,
Julia Lawall <julia-dAYI7NvHqcQ@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] infiniband: core: fix information leak to userland
Date: Sat, 6 Nov 2010 17:41:20 +0300 [thread overview]
Message-ID: <1289054481-18145-1-git-send-email-segooon@gmail.com> (raw)
Structure ib_uverbs_qp_attr is copied to userland with allmost all
fields uninitialized (140 bytes on x86). It leads to leaking of
contents of kernel stack memory.
Signed-off-by: Vasiliy Kulikov <segooon-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
Compile tested.
drivers/infiniband/core/ucm.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index 08f948d..ccfa4f9 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -622,7 +622,7 @@ static ssize_t ib_ucm_init_qp_attr(struct ib_ucm_file *file,
if (IS_ERR(ctx))
return PTR_ERR(ctx);
- resp.qp_attr_mask = 0;
+ memset(&resp, 0, sizeof(resp));
memset(&qp_attr, 0, sizeof qp_attr);
qp_attr.qp_state = cmd.qp_state;
result = ib_cm_init_qp_attr(ctx->cm_id, &qp_attr, &resp.qp_attr_mask);
--
1.7.0.4
--
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
next reply other threads:[~2010-11-06 14:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-06 14:41 Vasiliy Kulikov [this message]
[not found] ` <1289054481-18145-1-git-send-email-segooon-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-11-11 0:01 ` [PATCH] infiniband: core: fix information leak to userland Roland Dreier
[not found] ` <ada39r8ohiz.fsf-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2010-11-11 0:39 ` Hefty, Sean
2010-11-12 18:08 ` Vasiliy Kulikov
2010-11-12 18:28 ` Hefty, Sean
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF25B85224A6-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-11-14 9:22 ` [PATCH v2] infiniband: core: fix information leak to userspace Vasiliy Kulikov
2010-12-02 0:33 ` Roland Dreier
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=1289054481-18145-1-git-send-email-segooon@gmail.com \
--to=segooon-re5jqeeqqe8avxtiumwx3w@public.gmane.org \
--cc=achiang-VXdhtT5mjnY@public.gmane.org \
--cc=ak-VuQAYsv1563Yd54FQh9/CA@public.gmane.org \
--cc=gregkh-l3A5Bk7waGM@public.gmane.org \
--cc=hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=julia-dAYI7NvHqcQ@public.gmane.org \
--cc=kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=rolandd-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org \
--cc=sean.hefty-ral2JQCrhuEAvxtiuMwx3w@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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox