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Message-Id: <20191003154544.094603985@linuxfoundation.org>
Date: Thu, 3 Oct 2019 17:51:32 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Hans Verkuil <hverkuil-cisco@...all.nl>,
Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
Sasha Levin <sashal@...nel.org>,
syzbot+79d18aac4bf1770dd050@...kaller.appspotmail.com
Subject: [PATCH 5.2 114/313] media: hdpvr: add terminating 0 at end of string
From: Hans Verkuil <hverkuil-cisco@...all.nl>
[ Upstream commit 8b8900b729e4f31f12ac1127bde137c775c327e6 ]
dev->usbc_buf was passed as argument for %s, but it was not safeguarded
by a terminating 0.
This caused this syzbot issue:
https://syzkaller.appspot.com/bug?extid=79d18aac4bf1770dd050
Reported-and-tested-by: syzbot+79d18aac4bf1770dd050@...kaller.appspotmail.com
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/media/usb/hdpvr/hdpvr-core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/usb/hdpvr/hdpvr-core.c b/drivers/media/usb/hdpvr/hdpvr-core.c
index a0905c81d2cb2..b75c18a012a73 100644
--- a/drivers/media/usb/hdpvr/hdpvr-core.c
+++ b/drivers/media/usb/hdpvr/hdpvr-core.c
@@ -137,6 +137,7 @@ static int device_authorization(struct hdpvr_device *dev)
dev->fw_ver = dev->usbc_buf[1];
+ dev->usbc_buf[46] = '\0';
v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n",
dev->fw_ver, &dev->usbc_buf[2]);
--
2.20.1
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