summaryrefslogtreecommitdiff
path: root/drivers/hid
diff options
context:
space:
mode:
authorStefan Achatz <erazor_de@users.sourceforge.net>2011-06-12 08:02:44 (GMT)
committerJiri Kosina <jkosina@suse.cz>2011-06-13 11:06:23 (GMT)
commit901e64dbdb5998b9248c372a401c921bbdf662f6 (patch)
tree439c7685adb52e2b97b968ee6535da29a8434915 /drivers/hid
parent1edd5b42a6631b1b1f147e9018e309bde8d96a05 (diff)
downloadlinux-901e64dbdb5998b9248c372a401c921bbdf662f6.tar.xz
HID: roccat: fix NULL pointer dereference, add range checks
On rare occassions raw events can be triggered before drvdata gets set up which leads to NULL pointer dereferences. This was only observed with pyra on 2.6.39, but is fixed for all devices now to play it save. kovaplus returned wrong actual values when profile change was initiated from host. Added range checks for setting actual profile on all devices. Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-roccat-arvo.c5
-rw-r--r--drivers/hid/hid-roccat-kone.c3
-rw-r--r--drivers/hid/hid-roccat-koneplus.c8
-rw-r--r--drivers/hid/hid-roccat-kovaplus.c5
-rw-r--r--drivers/hid/hid-roccat-pyra.c3
5 files changed, 21 insertions, 3 deletions
diff --git a/drivers/hid/hid-roccat-arvo.c b/drivers/hid/hid-roccat-arvo.c
index 6105366..093bfad 100644
--- a/drivers/hid/hid-roccat-arvo.c
+++ b/drivers/hid/hid-roccat-arvo.c
@@ -163,6 +163,9 @@ static ssize_t arvo_sysfs_set_actual_profile(struct device *dev,
if (retval)
return retval;
+ if (profile < 1 || profile > 5)
+ return -EINVAL;
+
temp_buf.command = ARVO_COMMAND_ACTUAL_PROFILE;
temp_buf.actual_profile = profile;
@@ -399,7 +402,7 @@ static int arvo_raw_event(struct hid_device *hdev,
if (size != 3)
return 0;
- if (arvo->roccat_claimed)
+ if (arvo && arvo->roccat_claimed)
arvo_report_to_chrdev(arvo, data);
return 0;
diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
index 7e29778..2b8f3a3 100644
--- a/drivers/hid/hid-roccat-kone.c
+++ b/drivers/hid/hid-roccat-kone.c
@@ -832,6 +832,9 @@ static int kone_raw_event(struct hid_device *hdev, struct hid_report *report,
if (size != sizeof(struct kone_mouse_event))
return 0;
+ if (kone == NULL)
+ return 0;
+
/*
* Firmware 1.38 introduced new behaviour for tilt and special buttons.
* Pressed button is reported in each movement event.
diff --git a/drivers/hid/hid-roccat-koneplus.c b/drivers/hid/hid-roccat-koneplus.c
index 33ecad5..59e4777 100644
--- a/drivers/hid/hid-roccat-koneplus.c
+++ b/drivers/hid/hid-roccat-koneplus.c
@@ -431,6 +431,9 @@ static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
if (retval)
return retval;
+ if (profile > 4)
+ return -EINVAL;
+
mutex_lock(&koneplus->koneplus_lock);
retval = koneplus_set_actual_profile(usb_dev, profile);
@@ -439,7 +442,7 @@ static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
return retval;
}
- koneplus->actual_profile = profile;
+ koneplus_profile_activated(koneplus, profile);
roccat_report.type = KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE;
roccat_report.data1 = profile + 1;
@@ -751,6 +754,9 @@ static int koneplus_raw_event(struct hid_device *hdev,
!= USB_INTERFACE_PROTOCOL_MOUSE)
return 0;
+ if (koneplus == NULL)
+ return 0;
+
koneplus_keep_values_up_to_date(koneplus, data);
if (koneplus->roccat_claimed)
diff --git a/drivers/hid/hid-roccat-kovaplus.c b/drivers/hid/hid-roccat-kovaplus.c
index 212e792..1f8336e 100644
--- a/drivers/hid/hid-roccat-kovaplus.c
+++ b/drivers/hid/hid-roccat-kovaplus.c
@@ -337,7 +337,7 @@ static ssize_t kovaplus_sysfs_set_actual_profile(struct device *dev,
mutex_lock(&kovaplus->kovaplus_lock);
retval = kovaplus_set_actual_profile(usb_dev, profile);
- kovaplus->actual_profile = profile;
+ kovaplus_profile_activated(kovaplus, profile);
mutex_unlock(&kovaplus->kovaplus_lock);
if (retval)
return retval;
@@ -662,6 +662,9 @@ static int kovaplus_raw_event(struct hid_device *hdev,
!= USB_INTERFACE_PROTOCOL_MOUSE)
return 0;
+ if (kovaplus == NULL)
+ return 0;
+
kovaplus_keep_values_up_to_date(kovaplus, data);
if (kovaplus->roccat_claimed)
diff --git a/drivers/hid/hid-roccat-pyra.c b/drivers/hid/hid-roccat-pyra.c
index 75a092e..8140776b 100644
--- a/drivers/hid/hid-roccat-pyra.c
+++ b/drivers/hid/hid-roccat-pyra.c
@@ -637,6 +637,9 @@ static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
!= USB_INTERFACE_PROTOCOL_MOUSE)
return 0;
+ if (pyra == NULL)
+ return 0;
+
pyra_keep_values_up_to_date(pyra, data);
if (pyra->roccat_claimed)