From 78f857f265241dfa6f343d75b45e8b30935f71df Mon Sep 17 00:00:00 2001
From: Nathan Williams <nathan@traverse.com.au>
Date: Wed, 25 Mar 2009 20:33:42 +1100
Subject: [PATCH] solos: Check for rogue received packets
Sometimes there can be received packets with the size field set to 0xFFFF.
This seems to only occur after an FPGA or firmware upgrade.
This patch discards packets with an invalid size.
Signed-off-by: Nathan Williams <nathan@traverse.com.au>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---
drivers/atm/solos-pci.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index bfef8d255811..6c828347c9cc 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -671,6 +671,10 @@ void solos_bh(unsigned long card_arg)
memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
size = le16_to_cpu(header->size);
+ if (size > (card->buffer_size - sizeof(*header))){
+ dev_warn(&card->dev->dev, "Invalid buffer size\n");
+ continue;
+ }
skb = alloc_skb(size + 1, GFP_ATOMIC);
if (!skb) {
--
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