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[NTOS:KD] Don't assume null termination in KdpSerialDebugPrint and KdpScreenPrint. CORE-14057 CORE-14103

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Thomas Faber 2017-12-12 12:38:45 +01:00
parent a0fe72e218
commit a07b569b25
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GPG key ID: 076E7C3D44720826
1 changed files with 3 additions and 4 deletions
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7
ntoskrnl/kd/kdio.c
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@ -340,7 +340,7 @@ KdpSerialDebugPrint(LPSTR Message,
}
/* Output the message */
while (*pch != 0)
while (pch < Message + Length && *pch != '\0')
{
if (*pch == '\n')
{
@ -412,7 +412,7 @@ KdpScreenPrint(LPSTR Message,
KIRQL OldIrql;
PCHAR pch = (PCHAR) Message;
while (*pch)
while (pch < Message + Length && *pch)
{
if(*pch == '\b')
{
@ -584,9 +584,8 @@ KdpPrintString(
_SEH2_TRY
{
ProbeForRead(UnsafeString, Length, 1);
String = _alloca(Length + 1);
String = _alloca(Length);
RtlCopyMemory(String, UnsafeString, Length);
String[Length] = ANSI_NULL;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{