Bug #4952
Updated by Victor Julien over 2 years ago
<pre>
CC detect.o
detect.c:1238:38: warning: Access to field 'de_state' results in a dereference of a null pointer (loaded from variable 'txd') [core.NullDereference]
DetectEngineState *tx_de_state = txd->de_state;
^~~~~~~~~~~~~
1 warning generated.
</pre>
@txd@ is *almost* everywhere a part of the transaction structure, where it can't be by NULL if we have a tx. However in the case of HTTP we can have a tx w/o a @HTPTxUserData@ object which means it is possible to have a NULL @txd@ in some edge cases.
Now a HTP tx w/o a @HTPTxUserData@ is useless from the Suricata perspective, so I wonder if we can somehow "hide" a tx like that from Suricata.
Introduced in https://github.com/OISF/suricata/commit/1ad71b96daa2b2655691cfce2a15ccd754d9b290#diff-ee484ae4b77e59eb8b6b50f628c84ab626bd6178a6d43e1219dbc9619be7e027R1238