diff options
| -rw-r--r-- | drivers/ide/ide-taskfile.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index 1d0470c1f95..30175c7688e 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -524,8 +524,8 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) task_ioreg_t *hobsptr = args.hobRegister; int err = 0; int tasksize = sizeof(struct ide_task_request_s); - int taskin = 0; - int taskout = 0; + unsigned int taskin = 0; + unsigned int taskout = 0; u8 io_32bit = drive->io_32bit; char __user *buf = (char __user *)arg; @@ -538,8 +538,13 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) return -EFAULT; } - taskout = (int) req_task->out_size; - taskin = (int) req_task->in_size; + taskout = req_task->out_size; + taskin = req_task->in_size; + + if (taskin > 65536 || taskout > 65536) { + err = -EINVAL; + goto abort; + } if (taskout) { int outtotal = tasksize; |