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media: hdpvr: add terminating 0 at end of string

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[ Upstream commit 8b8900b729 ]

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@syzkaller.appspotmail.com

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hans Verkuil 2019-08-15 10:00:33 -03:00 committed by Greg Kroah-Hartman
parent 4a2cb7600b
commit e6bc6e2c0d
1 changed files with 1 additions and 0 deletions
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1
drivers/media/usb/hdpvr/hdpvr-core.c
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@ -141,6 +141,7 @@ 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]);