diff options
| author | Peter Huewe <huewe.external.infineon@googlemail.com> | 2011-03-29 13:31:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-14 16:53:34 -0700 |
| commit | 913bb1e135157477bd3d16450ca7ef6b67775602 (patch) | |
| tree | 0fa035f805b8f61ec1f43a42265edc047bdfaeba | |
| parent | 6216277c085f263225cfb97a8b2fc869e5418fb1 (diff) | |
char/tpm: Fix unitialized usage of data buffer
commit 1309d7afbed112f0e8e90be9af975550caa0076b upstream.
This patch fixes information leakage to the userspace by initializing
the data buffer to zero.
Reported-by: Peter Huewe <huewe.external@infineon.com>
Signed-off-by: Peter Huewe <huewe.external@infineon.com>
Signed-off-by: Marcel Selhorst <m.selhorst@sirrix.com>
[ Also removed the silly "* sizeof(u8)". If that isn't 1, we have way
deeper problems than a simple multiplication can fix. - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/char/tpm/tpm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 8548ae7a176c..edd7b7f3b26b 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -969,7 +969,7 @@ int tpm_open(struct inode *inode, struct file *file) return -EBUSY; } - chip->data_buffer = kmalloc(TPM_BUFSIZE * sizeof(u8), GFP_KERNEL); + chip->data_buffer = kzalloc(TPM_BUFSIZE, GFP_KERNEL); if (chip->data_buffer == NULL) { clear_bit(0, &chip->is_open); put_device(chip->dev); |