From: Dan Carpenter <dan.carpenter@oracle.com>
To: Jiri Kosina <jkosina@suse.cz>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Henrik Rydberg <rydberg@euromail.se>,
linux-input@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] HID: logitech-hidpp: leaks and NULL dereferences
Date: Fri, 31 Oct 2014 09:14:39 +0000 [thread overview]
Message-ID: <20141031091439.GA11252@mwanda> (raw)
Shift the allocation down a few lines to avoid a memory leak and also
add a check for allocation failure.
Fixes: 2f31c5252910 ('HID: Introduce hidpp, a module to handle Logitech hid++ devices')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 361e97d..3cce995 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -200,13 +200,15 @@ static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp,
u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count,
struct hidpp_report *response)
{
- struct hidpp_report *message = kzalloc(sizeof(struct hidpp_report),
- GFP_KERNEL);
+ struct hidpp_report *message;
int ret;
if (param_count > sizeof(message->fap.params))
return -EINVAL;
+ message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
+ if (!message)
+ return -ENOMEM;
message->report_id = REPORT_ID_HIDPP_LONG;
message->fap.feature_index = feat_index;
message->fap.funcindex_clientid = funcindex_clientid;
@@ -221,8 +223,7 @@ static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count,
struct hidpp_report *response)
{
- struct hidpp_report *message = kzalloc(sizeof(struct hidpp_report),
- GFP_KERNEL);
+ struct hidpp_report *message;
int ret;
if ((report_id != REPORT_ID_HIDPP_SHORT) &&
@@ -232,6 +233,9 @@ static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
if (param_count > sizeof(message->rap.params))
return -EINVAL;
+ message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
+ if (!message)
+ return -ENOMEM;
message->report_id = report_id;
message->rap.sub_id = sub_id;
message->rap.reg_address = reg_address;
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Jiri Kosina <jkosina@suse.cz>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Henrik Rydberg <rydberg@euromail.se>,
linux-input@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] HID: logitech-hidpp: leaks and NULL dereferences
Date: Fri, 31 Oct 2014 12:14:39 +0300 [thread overview]
Message-ID: <20141031091439.GA11252@mwanda> (raw)
Shift the allocation down a few lines to avoid a memory leak and also
add a check for allocation failure.
Fixes: 2f31c5252910 ('HID: Introduce hidpp, a module to handle Logitech hid++ devices')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 361e97d..3cce995 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -200,13 +200,15 @@ static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp,
u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count,
struct hidpp_report *response)
{
- struct hidpp_report *message = kzalloc(sizeof(struct hidpp_report),
- GFP_KERNEL);
+ struct hidpp_report *message;
int ret;
if (param_count > sizeof(message->fap.params))
return -EINVAL;
+ message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
+ if (!message)
+ return -ENOMEM;
message->report_id = REPORT_ID_HIDPP_LONG;
message->fap.feature_index = feat_index;
message->fap.funcindex_clientid = funcindex_clientid;
@@ -221,8 +223,7 @@ static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count,
struct hidpp_report *response)
{
- struct hidpp_report *message = kzalloc(sizeof(struct hidpp_report),
- GFP_KERNEL);
+ struct hidpp_report *message;
int ret;
if ((report_id != REPORT_ID_HIDPP_SHORT) &&
@@ -232,6 +233,9 @@ static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
if (param_count > sizeof(message->rap.params))
return -EINVAL;
+ message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
+ if (!message)
+ return -ENOMEM;
message->report_id = report_id;
message->rap.sub_id = sub_id;
message->rap.reg_address = reg_address;
next reply other threads:[~2014-10-31 9:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-31 9:14 Dan Carpenter [this message]
2014-10-31 9:14 ` [patch] HID: logitech-hidpp: leaks and NULL dereferences Dan Carpenter
2014-10-31 13:49 ` Benjamin Tissoires
2014-10-31 13:49 ` Benjamin Tissoires
2014-11-03 13:27 ` Jiri Kosina
2014-11-03 13:27 ` Jiri Kosina
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=20141031091439.GA11252@mwanda \
--to=dan.carpenter@oracle.com \
--cc=benjamin.tissoires@redhat.com \
--cc=jkosina@suse.cz \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-input@vger.kernel.org \
--cc=rydberg@euromail.se \
/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.