linux-kernel - [PATCH] media: usb: fix memory leak in af9005_identify

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Message-Id: <20190913235505.9164-1-navid.emamdoost@gmail.com>
Date:   Fri, 13 Sep 2019 18:55:02 -0500
From:   Navid Emamdoost <navid.emamdoost@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     emamd001@....edu, smccaman@....edu, kjlu@....edu,
        Navid Emamdoost <navid.emamdoost@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Richard Fontana <rfontana@...hat.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] media: usb: fix memory leak in af9005_identify_state

In af9005_identify_state when returning -EIO the allocated buffer should
be released.

Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
---
 drivers/media/usb/dvb-usb/af9005.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/usb/dvb-usb/af9005.c b/drivers/media/usb/dvb-usb/af9005.c
index 02697d86e8c1..aee500beaab6 100644
--- a/drivers/media/usb/dvb-usb/af9005.c
+++ b/drivers/media/usb/dvb-usb/af9005.c
@@ -975,8 +975,10 @@ static int af9005_identify_state(struct usb_device *udev,
 		*cold = 1;
 	else if (reply == 0x02)
 		*cold = 0;
-	else
+	else {
+		kfree(buf);
 		return -EIO;
+	}
 	deb_info("Identify state cold = %d\n", *cold);
 
 err:
-- 
2.17.1