diff options
Diffstat (limited to 'drivers/scsi/megaraid')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 071ea1cad41c..cc953725d9be 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -6470,6 +6470,9 @@ static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) int i; int error = 0; compat_uptr_t ptr; + unsigned long local_raw_ptr; + u32 local_sense_off; + u32 local_sense_len; if (clear_user(ioc, sizeof(*ioc))) return -EFAULT; @@ -6487,9 +6490,15 @@ static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) * sense_len is not null, so prepare the 64bit value under * the same condition. */ - if (ioc->sense_len) { + if (get_user(local_raw_ptr, ioc->frame.raw) || + get_user(local_sense_off, &ioc->sense_off) || + get_user(local_sense_len, &ioc->sense_len)) + return -EFAULT; + + + if (local_sense_len) { void __user **sense_ioc_ptr = - (void __user **)(ioc->frame.raw + ioc->sense_off); + (void __user **)((u8*)local_raw_ptr + local_sense_off); compat_uptr_t *sense_cioc_ptr = (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); if (get_user(ptr, sense_cioc_ptr) || |