sravan/system76-edk2
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Add more check to make code more safely.

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Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ouyang Qian  <ouyang.qian@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13903 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
ydong10
2012-11-01 02:10:31 +00:00
parent 0d5df2aba7
commit a56b6e03e2
6 changed files with 11 additions and 1 deletions
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4
MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.c
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@@ -849,7 +849,8 @@ Ip4AccpetFrame (
goto DROP;
}
Head = (IP4_HEAD *) NetbufGetByte (Packet, 0, NULL);
Head = (IP4_HEAD *) NetbufGetByte (Packet, 0, NULL);
ASSERT (Head != NULL);
OptionLen = (Head->HeadLen << 2) - IP4_MIN_HEADLEN;
if (OptionLen > 0) {
Option = (UINT8 *) (Head + 1);
@@ -899,6 +900,7 @@ Ip4AccpetFrame (
// is transfered to the packet process logic.
//
Head = (IP4_HEAD *) NetbufGetByte (Packet, 0, NULL);
ASSERT (Head != NULL);
Status = Ip4PreProcessPacket (
IpSb,
&Packet,