diff --git a/protocol/src/protocol_generated_verifier.rs b/protocol/src/protocol_generated_verifier.rs
index 4e46b9aeb3..d81db0f697 100644
--- a/protocol/src/protocol_generated_verifier.rs
+++ b/protocol/src/protocol_generated_verifier.rs
@@ -52,6 +52,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -59,7 +65,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -131,6 +136,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -138,7 +149,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -261,6 +271,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -268,7 +284,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -341,6 +356,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -348,7 +369,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -430,6 +450,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -437,7 +463,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -509,6 +534,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -516,7 +547,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -607,6 +637,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -614,7 +650,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -723,6 +758,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -730,7 +771,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -785,6 +825,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -792,7 +838,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -942,6 +987,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -949,7 +1000,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1052,6 +1102,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1059,7 +1115,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1140,6 +1195,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1147,7 +1208,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1228,6 +1288,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1235,7 +1301,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1307,6 +1372,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1314,7 +1385,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1404,6 +1474,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1411,7 +1487,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1586,6 +1661,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1593,7 +1674,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1666,6 +1746,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1673,7 +1759,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1752,6 +1837,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1759,7 +1850,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1848,6 +1938,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1855,7 +1951,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -1928,6 +2023,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -1935,7 +2036,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -2038,6 +2138,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -2045,7 +2151,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -2136,6 +2241,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -2143,7 +2254,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -2233,6 +2343,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -2240,7 +2356,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -2351,6 +2466,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -2358,7 +2479,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -2422,6 +2542,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -2429,7 +2555,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -2499,6 +2624,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -2506,7 +2637,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -2624,6 +2754,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -2631,7 +2767,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)
@@ -2733,6 +2868,12 @@ pub mod ckb {
 
                 let vtab = tab.vtable();
                 let vtab_num_bytes = vtab.num_bytes();
+                let object_inline_num_bytes = vtab.object_inline_num_bytes();
+                if vtab_num_bytes < flatbuffers::SIZE_VOFFSET + flatbuffers::SIZE_VOFFSET
+                    || object_inline_num_bytes < flatbuffers::SIZE_SOFFSET
+                {
+                    return Err(Error::OutOfBounds);
+                }
                 if vtab_loc
                     .checked_add(vtab_num_bytes)
                     .filter(|loc| *loc <= buf_len)
@@ -2740,7 +2881,6 @@ pub mod ckb {
                 {
                     return Err(Error::OutOfBounds);
                 }
-                let object_inline_num_bytes = vtab.object_inline_num_bytes();
                 if tab
                     .loc
                     .checked_add(object_inline_num_bytes)