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NetworkPkg/TcpDxe: Check FragmentBuffer for NULL before use

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According the Spec, the FragmentBuffers in FragmentTable are allocated
by the application when calling Receive() function. This patch is to
check whether the FragmentBuffer is valid or not.

Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Wang Fan <fan.wang@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wu Jiaxin <jiaxin.wu@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
This commit is contained in:
Jiaxin Wu 2017-12-22 11:28:42 +08:00
parent 5644e5cece
commit 8b40f01a3f
1 changed files with 3 additions and 0 deletions
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3
NetworkPkg/TcpDxe/TcpMain.c
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@ -40,6 +40,9 @@ TcpChkDataBuf (
UINT32 Len;
for (Index = 0, Len = 0; Index < FragmentCount; Index++) {
if (FragmentTable[Index].FragmentBuffer == NULL) {
return EFI_INVALID_PARAMETER;
}
Len = Len + FragmentTable[Index].FragmentLength;
}