Don't read paste the buffer, if the firmware is corrupted.
Instead, print an error message.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
diff --git a/drivers/media/dvb/frontends/drxk_hard.c b/drivers/media/dvb/frontends/drxk_hard.c
index c4b35a5..89db378 100644
--- a/drivers/media/dvb/frontends/drxk_hard.c
+++ b/drivers/media/dvb/frontends/drxk_hard.c
@@ -1388,6 +1388,12 @@ static int DownloadMicrocode(struct drxk_state *state,
BlockCRC = (pSrc[0] << 8) | pSrc[1];
pSrc += sizeof(u16);
offset += sizeof(u16);
+
+ if (offset + BlockSize > Length) {
+ printk(KERN_ERR "drxk: Firmware is corrupted.\n");
+ return -EINVAL;
+ }
+
status = write_block(state, Address, BlockSize, pSrc);
if (status < 0)
break;
--
1.7.1
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