[PATCH v2 1/2] nsiproxy: Only set the connection count from tcp_conns_enumerate_all when appropriate.

[Tim Clem]

From: Tim Clem

Fixes heap corruption downstream in NsiEnumerateObjectsAllParametersEx.

Fixes a regression from 9085bc7b87f.
---
 dlls/nsiproxy.sys/tcp.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/dlls/nsiproxy.sys/tcp.c b/dlls/nsiproxy.sys/tcp.c
index 7a3004b1a97..2c55db30523 100644
--- a/dlls/nsiproxy.sys/tcp.c
+++ b/dlls/nsiproxy.sys/tcp.c
@@ -322,8 +322,14 @@ static NTSTATUS tcp_conns_enumerate_all( UINT filter, struct nsi_tcp_conn_key *k
             *count = reply->count;
         else if (ret == STATUS_BUFFER_TOO_SMALL)
         {
-            *count = reply->count;
-            if (want_data)
+            if (!want_data)
+            {
+                /* If we were given buffers, the outgoing count must never be
+                   greater than the incoming one. If we weren't, the count
+                   should be set to the actual count. */
+                *count = reply->count;
+            }
+            else
             {
                 free( connections );
                 return STATUS_BUFFER_OVERFLOW;