From: Dan Carpenter <dan.carpenter@oracle.com>
To: Dimitri Sivanich <sivanich@sgi.com>
Cc: Robin Holt <holt@sgi.com>,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
walter harms <wharms@bfs.de>
Subject: [patch v2] gru: info leak in gru_get_config_info()
Date: Sun, 21 Apr 2013 17:01:07 +0000 [thread overview]
Message-ID: <20130421170107.GA16118@elgon.mountain> (raw)
In-Reply-To: <20130421131902.GT3658@sgi.com>
The "info.fill" array isn't initialized so it can leak uninitialized
stack information to user space.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: style changes
diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
index 44d273c..0535d1e 100644
--- a/drivers/misc/sgi-gru/grufile.c
+++ b/drivers/misc/sgi-gru/grufile.c
@@ -172,6 +172,7 @@ static long gru_get_config_info(unsigned long arg)
nodesperblade = 2;
else
nodesperblade = 1;
+ memset(&info, 0, sizeof(info));
info.cpus = num_online_cpus();
info.nodes = num_online_nodes();
info.blades = info.nodes / nodesperblade;
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Dimitri Sivanich <sivanich@sgi.com>
Cc: Robin Holt <holt@sgi.com>,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
walter harms <wharms@bfs.de>
Subject: [patch v2] gru: info leak in gru_get_config_info()
Date: Sun, 21 Apr 2013 20:01:07 +0300 [thread overview]
Message-ID: <20130421170107.GA16118@elgon.mountain> (raw)
In-Reply-To: <20130421131902.GT3658@sgi.com>
The "info.fill" array isn't initialized so it can leak uninitialized
stack information to user space.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: style changes
diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
index 44d273c..0535d1e 100644
--- a/drivers/misc/sgi-gru/grufile.c
+++ b/drivers/misc/sgi-gru/grufile.c
@@ -172,6 +172,7 @@ static long gru_get_config_info(unsigned long arg)
nodesperblade = 2;
else
nodesperblade = 1;
+ memset(&info, 0, sizeof(info));
info.cpus = num_online_cpus();
info.nodes = num_online_nodes();
info.blades = info.nodes / nodesperblade;
next prev parent reply other threads:[~2013-04-21 17:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-21 11:10 [patch] gru: info leak in gru_get_config_info() Dan Carpenter
2013-04-21 11:10 ` Dan Carpenter
2013-04-21 11:56 ` walter harms
2013-04-21 11:56 ` walter harms
2013-04-21 13:19 ` Robin Holt
2013-04-21 13:19 ` Robin Holt
2013-04-21 17:01 ` Dan Carpenter [this message]
2013-04-21 17:01 ` [patch v2] " Dan Carpenter
2013-04-21 17:33 ` Dimitri Sivanich
2013-04-21 17:33 ` Dimitri Sivanich
2013-04-22 16:41 ` Robin Holt
2013-04-22 16:41 ` Robin Holt
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