diff options
| author | Vasiliy Kulikov <segoon@openwall.com> | 2011-06-26 12:56:22 +0400 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2011-08-01 13:55:03 -0700 |
| commit | 8df2d5870c76436e31a68ee141636f6555f9c789 (patch) | |
| tree | 2111851d6f77637302d62256151dbfc119a6bf5b | |
| parent | 1566cd03b690efb4d9997294cda9d0ac53ab3816 (diff) | |
staging: comedi: fix infoleak to userspace
[ upstream commit 819cbb120eaec7e014e5abd029260db1ca8c5735 ]
driver_name and board_name are pointers to strings, not buffers of size
COMEDI_NAMELEN. Copying COMEDI_NAMELEN bytes of a string containing
less than COMEDI_NAMELEN-1 bytes would leak some unrelated bytes.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index aeb2c00875cd..9b5df0ea0f7d 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -383,8 +383,8 @@ static int do_devinfo_ioctl(struct comedi_device *dev, /* fill devinfo structure */ devinfo.version_code = COMEDI_VERSION_CODE; devinfo.n_subdevs = dev->n_subdevices; - memcpy(devinfo.driver_name, dev->driver->driver_name, COMEDI_NAMELEN); - memcpy(devinfo.board_name, dev->board_name, COMEDI_NAMELEN); + strlcpy(devinfo.driver_name, dev->driver->driver_name, COMEDI_NAMELEN); + strlcpy(devinfo.board_name, dev->board_name, COMEDI_NAMELEN); if (read_subdev) devinfo.read_subdevice = read_subdev - dev->subdevices; |