resolves #47: invalid write in TNEFFillMapi

Don't pass 0 to calloc
Yeraze · May 30, 2018 · c576639 · c576639
1 parent 3fa03bb
commit c576639
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/lib/ytnef.c b/lib/ytnef.c
@@ -479,6 +479,10 @@ int TNEFFillMapi(TNEFStruct *TNEF, BYTE *data, DWORD size, MAPIProps *p) {
         d += 4;
         count = 0;
       }
+      if (mp->count == 0) {
+        printf("ERROR: count==0 when filling MAPI property\n");
+        return -1;
+      }
       mp->data = calloc(mp->count, sizeof(variableLength));
       ALLOCCHECK(mp->data);
       vl = mp->data;