diff --git a/include/amduat/pel/opreg_kernel.h b/include/amduat/pel/opreg_kernel.h
index 455718d..49fbb4b 100644
--- a/include/amduat/pel/opreg_kernel.h
+++ b/include/amduat/pel/opreg_kernel.h
@@ -24,6 +24,8 @@ enum {
 };
 
 enum {
+  AMDUAT_PEL_KERNEL_STATUS_OOM = 0x00000001u,
+  AMDUAT_PEL_KERNEL_STATUS_INTERNAL = 0x00000002u,
   AMDUAT_PEL_KERNEL_STATUS_CONCAT_TYPE_TAG_MISMATCH = 0x00010001u,
   AMDUAT_PEL_KERNEL_STATUS_SLICE_RANGE_OUT_OF_BOUNDS = 0x00020001u
 };
diff --git a/src/pel_stack/opreg/kernel.c b/src/pel_stack/opreg/kernel.c
index dc85acc..fcc5e88 100644
--- a/src/pel_stack/opreg/kernel.c
+++ b/src/pel_stack/opreg/kernel.c
@@ -8,8 +8,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-enum { AMDUAT_PEL_KERNEL_STATUS_INTERNAL = 1 };
-
 static bool amduat_name_eq(amduat_octets_t name, const char *literal) {
   size_t len = strlen(literal);
   if (name.len != len) {
@@ -175,7 +173,7 @@ static bool amduat_kernel_concat(const amduat_artifact_t *inputs,
     buffer = (uint8_t *)malloc(total_len);
     if (buffer == NULL) {
       if (out_status_code) {
-        *out_status_code = AMDUAT_PEL_KERNEL_STATUS_INTERNAL;
+        *out_status_code = AMDUAT_PEL_KERNEL_STATUS_OOM;
       }
       return false;
     }
@@ -194,7 +192,7 @@ static bool amduat_kernel_concat(const amduat_artifact_t *inputs,
   if (!amduat_alloc_outputs(1, out_outputs)) {
     free(buffer);
     if (out_status_code) {
-      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_INTERNAL;
+      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_OOM;
     }
     return false;
   }
@@ -254,7 +252,7 @@ static bool amduat_kernel_slice(const amduat_artifact_t *inputs,
     buffer = (uint8_t *)malloc((size_t)length);
     if (buffer == NULL) {
       if (out_status_code) {
-        *out_status_code = AMDUAT_PEL_KERNEL_STATUS_INTERNAL;
+        *out_status_code = AMDUAT_PEL_KERNEL_STATUS_OOM;
       }
       return false;
     }
@@ -271,7 +269,7 @@ static bool amduat_kernel_slice(const amduat_artifact_t *inputs,
   if (!amduat_alloc_outputs(1, out_outputs)) {
     free(buffer);
     if (out_status_code) {
-      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_INTERNAL;
+      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_OOM;
     }
     return false;
   }
@@ -314,7 +312,7 @@ static bool amduat_kernel_const(const amduat_pel_kernel_const_params_t *params,
     buffer = (uint8_t *)malloc(params->bytes.len);
     if (buffer == NULL) {
       if (out_status_code) {
-        *out_status_code = AMDUAT_PEL_KERNEL_STATUS_INTERNAL;
+        *out_status_code = AMDUAT_PEL_KERNEL_STATUS_OOM;
       }
       return false;
     }
@@ -326,7 +324,7 @@ static bool amduat_kernel_const(const amduat_pel_kernel_const_params_t *params,
   if (!amduat_alloc_outputs(1, out_outputs)) {
     free(buffer);
     if (out_status_code) {
-      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_INTERNAL;
+      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_OOM;
     }
     return false;
   }
@@ -384,7 +382,7 @@ static bool amduat_kernel_hash(const amduat_artifact_t *inputs,
   buffer = (uint8_t *)malloc(desc->digest_len);
   if (buffer == NULL) {
     if (out_status_code) {
-      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_INTERNAL;
+      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_OOM;
     }
     return false;
   }
@@ -401,7 +399,7 @@ static bool amduat_kernel_hash(const amduat_artifact_t *inputs,
   if (!amduat_alloc_outputs(1, out_outputs)) {
     free(buffer);
     if (out_status_code) {
-      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_INTERNAL;
+      *out_status_code = AMDUAT_PEL_KERNEL_STATUS_OOM;
     }
     return false;
   }
diff --git a/src/pel_stack/program_dag/program_dag.c b/src/pel_stack/program_dag/program_dag.c
index ef929de..493af28 100644
--- a/src/pel_stack/program_dag/program_dag.c
+++ b/src/pel_stack/program_dag/program_dag.c
@@ -596,6 +596,10 @@ static bool amduat_pel_program_dag_exec_internal(
             prepared.ops[node_index], resolved_inputs, node->inputs_len,
             &prepared.params[node_index], &node_results[node_index].outputs,
             &node_results[node_index].outputs_len, &status_code)) {
+      if (status_code == AMDUAT_PEL_KERNEL_STATUS_OOM) {
+        free(resolved_inputs);
+        goto oom_finish;
+      }
       if (status_code == 2 || status_code == 3 || status_code == 0) {
         status_code = 1;
       }