ide-tape: Don't leak kernel stack information
authorMichael Buesch <mb@bu3sch.de>
Sun, 19 Jul 2009 09:15:19 +0000 (09:15 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 22 Jul 2009 03:36:25 +0000 (20:36 -0700)
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>
drivers/ide/ide-tape.c

index 013dc595fab63754b391b33a7efd6b3e287167c3..bc5fb12b913c365da7610365c2167b7a7820e4de 100644 (file)
@@ -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)))