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[NTOS:LPC]

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- Avoid dereferencing a null pointer in LpcpDeletePort. By Samuel Serapión.
CORE-6850 #resolve

svn path=/trunk/; revision=71673
This commit is contained in:
Thomas Faber
2016-06-25 23:27:45 +00:00
parent b25491463d
commit d19532d463
1 changed files with 9 additions and 9 deletions
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reactos/ntoskrnl/lpc/close.c
+9 -9
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@@ -432,6 +432,15 @@ LpcpDeletePort(IN PVOID ObjectBody)
/* Dereference the object unless it's the same port */
if (ConnectionPort != Port) ObDereferenceObject(ConnectionPort);
/* Check if this is a connection port with a server process */
if (((Port->Flags & LPCP_PORT_TYPE_MASK) == LPCP_CONNECTION_PORT) &&
(ConnectionPort->ServerProcess))
{
/* Dereference the server process */
ObDereferenceObject(ConnectionPort->ServerProcess);
ConnectionPort->ServerProcess = NULL;
}
}
else
{
@@ -439,15 +448,6 @@ LpcpDeletePort(IN PVOID ObjectBody)
KeReleaseGuardedMutex(&LpcpLock);
}
/* Check if this is a connection port with a server process */
if (((Port->Flags & LPCP_PORT_TYPE_MASK) == LPCP_CONNECTION_PORT) &&
(ConnectionPort->ServerProcess))
{
/* Dereference the server process */
ObDereferenceObject(ConnectionPort->ServerProcess);
ConnectionPort->ServerProcess = NULL;
}
/* Free client security */
LpcpFreePortClientSecurity(Port);
LPCTRACE(LPC_CLOSE_DEBUG, "Port: %p deleted\n", Port);