camessage.c: Add missing condition to detect extended message form,

beside the payload field (m_postsize) being set to 0xffff, the data count field (m_count) must also be set to 0
epics-base · Mar 11, 2021 · 5db7541 · 5db7541
1 parent c8105a1
commit 5db7541
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/modules/database/src/ioc/rsrv/camessage.c b/modules/database/src/ioc/rsrv/camessage.c
@@ -2449,7 +2449,7 @@ int camessage ( struct client *client )
          *
          * Disconnect client that send an invalid payload size.
          */
-        if ( CA_V49(client->minor_version_number) && msg.m_postsize == 0xffff  ) {
+        if (CA_V49(client->minor_version_number) && msg.m_postsize == 0xffff && msg.m_count == 0) {
             ca_uint32_t *pLW = ( ca_uint32_t * ) ( mp + 1 );
             if ( bytes_left < sizeof(*mp) + 2 * sizeof(*pLW) ) {
                 status = RSRV_OK;