diff options
| -rw-r--r-- | drivers/net/wireless/marvell/libertas/if_usb.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/net/wireless/marvell/libertas/if_usb.c b/drivers/net/wireless/marvell/libertas/if_usb.c index 5cc0c5cac257..74870c9bd091 100644 --- a/drivers/net/wireless/marvell/libertas/if_usb.c +++ b/drivers/net/wireless/marvell/libertas/if_usb.c @@ -798,10 +798,18 @@ static int check_fwfile_format(const uint8_t *data, uint32_t totlen) exit = len = 0; do { - struct fwheader *fwh = (void *)data; + struct fwheader *fwh; + + if (totlen - len < sizeof(*fwh)) + break; + + fwh = (void *)data; bincmd = le32_to_cpu(fwh->dnldcmd); blksize = le32_to_cpu(fwh->datalength); + if (blksize > totlen - len - sizeof(*fwh)) + break; + switch (bincmd) { case FW_HAS_DATA_TO_RECV: offset = sizeof(struct fwheader) + blksize; |