From: Michael Buesch <mb@bu3sch.de>
Date: Sun, 19 Jul 2009 09:15:19 +0000 (+0000)
Subject: ide-tape: Don't leak kernel stack information
X-Git-Tag: v2.6.31~7^2~1
X-Git-Url: http://ftp.safe.ca/?a=commitdiff_plain;h=2fc2111c2729462b99b6e37f39a48917054776f5;p=safe%2Fjmp%2Flinux-2.6

ide-tape: Don't leak kernel stack information

Don't leak kernel stack information through uninitialized structure members.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Acked-by: Borislav Petkov <petkovbb@gmail.com>.
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 013dc59..bc5fb12 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1064,6 +1064,7 @@ static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd,
 		tape->best_dsc_rw_freq = config.dsc_rw_frequency;
 		break;
 	case 0x0350:
+		memset(&config, 0, sizeof(config));
 		config.dsc_rw_frequency = (int) tape->best_dsc_rw_freq;
 		config.nr_stages = 1;
 		if (copy_to_user(argp, &config, sizeof(config)))