Fix alignment errors in hashtable fuzzer

we extract several values (uint16_t and uint64_t from the fuzzer buff passed in, but they weren't aligned on 2 and 8 byte boundaries. Adjust the fuzzer to memcpy data to the target variables to avoid unalignment issues Fixes #24272 Reviewed-by: Paul Dale <[email protected]> Reviewed-by: Tom Cosgrove <[email protected]> (Merged from openssl/openssl#24276)
ibmruntimes · Apr 30, 2024 · c04901b · c04901b
1 parent 2d29a8a
commit c04901b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/fuzz/hashtable.c b/fuzz/hashtable.c
@@ -142,7 +142,7 @@ int FuzzerTestOneInput(const uint8_t *buf, size_t len)
      * parse out our operation flags and key
      */
     op_flags = buf[0];
-    keyval = *((uint16_t *)&buf[1]);
+    memcpy(&keyval, &buf[1], sizeof(uint16_t));
 
     /*
      * Initialize our key
@@ -177,7 +177,7 @@ int FuzzerTestOneInput(const uint8_t *buf, size_t len)
                 rc_prediction = 0;
         }
 
-        valptr->value = *(uint64_t *)&buf[3];
+        memcpy(&valptr->value, &buf[3], sizeof(uint64_t));
         /*
          * do the insert/replace
          */