Fixed out-of-boundary reads in case user activates -S for fast but pure hashes in -a 1 or -a 3 mode

docs/changes.txt

@@ -46,6 +46,7 @@
 - Fixed incorrect maximum password length support for -m 400 in optimized mode (reduced from 55 to 39)
 - Fixed internal access on module option attribute OPTS_TYPE_SUGGEST_KG with the result that it was unused
 - Fixed invalid handling of outfile folder entries for -m 22000
+- Fixed out-of-boundary reads in case user activates -S for fast but pure hashes in -a 1 or -a 3 mode
 - Fixed password reassembling for cracked hashes on host for slow hashes in optimized mode that are longer than 32 characters
 - Fixed race condition in potfile check during removal of empty hashes
 - Fixed race condition resulting in out of memory error on startup if multiple hashcat instances are started at the same time

src/backend.c

@@ -10613,7 +10613,9 @@ int backend_session_begin (hashcat_ctx_t *hashcat_ctx)
     // this is required because inside the kernels there is this:
     // __local pw_t s_pws[64];
 
-    if ((user_options->attack_mode == ATTACK_MODE_STRAIGHT) || (user_options->attack_mode == ATTACK_MODE_ASSOCIATION))
+    if ((user_options->attack_mode == ATTACK_MODE_STRAIGHT)
+     || (user_options->attack_mode == ATTACK_MODE_ASSOCIATION)
+     || (user_options->slow_candidates == true))
     {
       if (hashconfig->attack_exec == ATTACK_EXEC_INSIDE_KERNEL)
       {