diff options
| author | Roel Kluin | 2010-10-05 01:30:02 +0200 |
|---|---|---|
| committer | Samuel Ortiz | 2010-10-11 02:11:58 +0200 |
| commit | 3b06dbbeadb6488cd00999b61b080bb6f0218503 (patch) | |
| tree | f2a7e56464f6e82de25318c934d07bf6246b39cf /drivers/net/irda | |
| parent | f8cba16cad68c9b9ee7fecae48a1b91708e8e482 (diff) | |
irda: Test index before read in stir421x_patch_device()
Test whether index exceeds fw->size before reading the element
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Diffstat (limited to 'drivers/net/irda')
| -rw-r--r-- | drivers/net/irda/irda-usb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/irda/irda-usb.c b/drivers/net/irda/irda-usb.c index cce82f101f50..e4ea61944c22 100644 --- a/drivers/net/irda/irda-usb.c +++ b/drivers/net/irda/irda-usb.c @@ -1124,11 +1124,11 @@ static int stir421x_patch_device(struct irda_usb_cb *self) * The actual image starts after the "STMP" keyword * so forward to the firmware header tag */ - for (i = 0; (fw->data[i] != STIR421X_PATCH_END_OF_HDR_TAG) && - (i < fw->size); i++) ; + for (i = 0; i < fw->size && fw->data[i] != + STIR421X_PATCH_END_OF_HDR_TAG; i++) ; /* here we check for the out of buffer case */ - if ((STIR421X_PATCH_END_OF_HDR_TAG == fw->data[i]) && - (i < STIR421X_PATCH_CODE_OFFSET)) { + if (i < STIR421X_PATCH_CODE_OFFSET && i < fw->size && + STIR421X_PATCH_END_OF_HDR_TAG == fw->data[i]) { if (!memcmp(fw->data + i + 1, STIR421X_PATCH_STMP_TAG, sizeof(STIR421X_PATCH_STMP_TAG) - 1)) { |