Module: kamailio
Branch: 5.4
Commit: 98b091d16072bc767affde805c30c7ec4911b9ec
URL: 
https://github.com/kamailio/kamailio/commit/98b091d16072bc767affde805c30c7ec4911b9ec

Author: Daniel-Constantin Mierla <[email protected]>
Committer: Daniel-Constantin Mierla <[email protected]>
Date: 2021-04-15T08:35:23+02:00

seas: check when walking the list

(cherry picked from commit 7231be0785009cb17581822f0765985eb7bdb243)

---

Modified: src/modules/seas/seas_action.c

---

Diff:  
https://github.com/kamailio/kamailio/commit/98b091d16072bc767affde805c30c7ec4911b9ec.diff
Patch: 
https://github.com/kamailio/kamailio/commit/98b091d16072bc767affde805c30c7ec4911b9ec.patch

---

diff --git a/src/modules/seas/seas_action.c b/src/modules/seas/seas_action.c
index cd62848ab0..83be6307d0 100644
--- a/src/modules/seas/seas_action.c
+++ b/src/modules/seas/seas_action.c
@@ -1329,8 +1329,12 @@ int extract_allowed_headers(struct sip_msg *my_msg,int 
strip_top_vias,int allow_
         }else{
            assert(rtcnt>0);
            rb=hf->parsed;
-           while(--rtcnt)
+           while(rb && --rtcnt)
               rb=rb->next;
+               if(!rb) {
+                       LM_ERR("no rr\n");
+                       goto error;
+               }
            k= (((rb->nameaddr.name.s) + rb->len)-hf->name.s) ;
            if(len+k+CRLF_LEN<headers_len){
               memcpy(headers+len,hf->name.s,k);


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