From: Lucas Stach <dev@lynxeye.de>
To: barebox@lists.infradead.org
Subject: [PATCH 2/7] USB: gadget: composite: avoid possible NULL ptr dereference
Date: Wed, 6 Jul 2016 20:44:35 +0200 [thread overview]
Message-ID: <1467830680-5909-2-git-send-email-dev@lynxeye.de> (raw)
In-Reply-To: <1467830680-5909-1-git-send-email-dev@lynxeye.de>
Check if g is valid before trying to dereference it.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
---
drivers/usb/gadget/composite.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 9e38ac4..1cfc49d 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -86,7 +86,7 @@ int config_ep_by_speed(struct usb_gadget *g,
struct usb_function *f,
struct usb_ep *_ep)
{
- struct usb_composite_dev *cdev = get_gadget_data(g);
+ struct usb_composite_dev *cdev;
struct usb_endpoint_descriptor *chosen_desc = NULL;
struct usb_descriptor_header **speed_desc = NULL;
@@ -98,6 +98,8 @@ int config_ep_by_speed(struct usb_gadget *g,
if (!g || !f || !_ep)
return -EIO;
+ cdev = get_gadget_data(g);
+
/* select desired speed */
switch (g->speed) {
case USB_SPEED_SUPER:
--
2.7.4
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next prev parent reply other threads:[~2016-07-06 18:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-06 18:44 [PATCH 1/7] compiler: avoid redefining symbols when running with checker Lucas Stach
2016-07-06 18:44 ` Lucas Stach [this message]
2016-07-06 18:44 ` [PATCH 3/7] video: displaytimings: don't double free display timings Lucas Stach
2016-07-07 6:52 ` Sascha Hauer
2016-07-06 18:44 ` [PATCH 4/7] imx-bbu-nand-fcb: don't drop error return code Lucas Stach
2016-07-06 18:44 ` [PATCH 5/7] imx-bbu-nand-fcb: avoid double free of dbbt_entries Lucas Stach
2016-07-06 18:44 ` [PATCH 6/7] clk: fix misleading indenting Lucas Stach
2016-07-06 18:44 ` [PATCH 7/7] blspec: use correct return type Lucas Stach
2016-07-07 7:43 ` Sascha Hauer
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