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List:       kernel-janitors
Subject:    [PATCH] statistics_write: ft1000: fix kernel info leak to userland
From:       Vasiliy Kulikov <segooon () gmail ! com>
Date:       2010-09-28 17:49:38
Message-ID: 1285696178-5696-1-git-send-email-segooon () gmail ! com
[Download RAW message or body]

get_stat_data is not fully initialized before copy_to_user() call,
e.g. LedStat is not always set.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
---
 drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c \
b/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c index 65087ce..467fd31 100644
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c
@@ -623,7 +623,7 @@ static int ft1000_ChIoctl (struct file *File, unsigned int \
Command,  break;
     case IOCTL_GET_DSP_STAT_CMD:
         //DEBUG("FT1000:ft1000_ChIoctl: IOCTL_FT1000_GET_DSP_STAT called\n");
-
+	memset(get_stat_data, 0, sizeof(get_stat_data));
         memcpy(get_stat_data.DspVer, info->DspVer, DSPVERSZ);
         memcpy(get_stat_data.HwSerNum, info->HwSerNum, HWSERNUMSZ);
         memcpy(get_stat_data.Sku, info->Sku, SKUSZ);
-- 
1.7.0.4

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