diff options
| -rw-r--r-- | drivers/staging/bcm/Bcmchar.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/staging/bcm/Bcmchar.c b/drivers/staging/bcm/Bcmchar.c index c4d7a619418..fa4a854ba05 100644 --- a/drivers/staging/bcm/Bcmchar.c +++ b/drivers/staging/bcm/Bcmchar.c @@ -999,11 +999,15 @@ cntrlEnd: } case IOCTL_BCM_GET_DRIVER_VERSION: { + ulong len; + /* Copy Ioctl Buffer structure */ if (copy_from_user(&IoBuffer, argp, sizeof(IOCTL_BUFFER))) return -EFAULT; - if (copy_to_user(IoBuffer.OutputBuffer, VER_FILEVERSION_STR, IoBuffer.OutputLength)) + len = min_t(ulong, IoBuffer.OutputLength, strlen(VER_FILEVERSION_STR) + 1); + + if (copy_to_user(IoBuffer.OutputBuffer, VER_FILEVERSION_STR, len)) return -EFAULT; Status = STATUS_SUCCESS; break; |