ntdll: Handle invalid pointers in NtQueryInformationProcess(ProcessDebugObjectHandle).

f2432a8b · Andrey Turkin · Alexandre Julliard · 29af4f9f · f2432a8b
Commit f2432a8b authored Oct 06, 2009 by Andrey Turkin Committed by Alexandre Julliard Oct 06, 2009
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process.c dlls/ntdll/process.c +8 -1

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--- a/dlls/ntdll/process.c
+++ b/dlls/ntdll/process.c
@@ -304,7 +304,14 @@ NTSTATUS WINAPI NtQueryInformationProcess(
         * set it to 0 aka "no debugger" to satisfy copy protections */
        len = sizeof(HANDLE);
        if (ProcessInformationLength == len)
-            memset(ProcessInformation, 0, ProcessInformationLength);
+        {
+            if (!ProcessInformation)
+                ret = STATUS_ACCESS_VIOLATION;
+            else if (!ProcessHandle)
+                ret = STATUS_INVALID_HANDLE;
+            else
+                memset(ProcessInformation, 0, ProcessInformationLength);
+        }
        else
            ret = STATUS_INFO_LENGTH_MISMATCH;
        break;