diff --git a/src/object/srv_obj_migrate.c b/src/object/srv_obj_migrate.c
index 854d03f5ead..3a39b842ead 100644
--- a/src/object/srv_obj_migrate.c
+++ b/src/object/srv_obj_migrate.c
@@ -2010,6 +2010,7 @@ migrate_one_ult(void *arg)
 	struct migrate_one      *mrone = arg;
 	struct migrate_pool_tls	*tls;
 	daos_size_t		data_size;
+	daos_size_t              degraded_size = 0;
 	int			rc = 0;
 
 	while (daos_fail_check(DAOS_REBUILD_TGT_REBUILD_HANG))
@@ -2022,21 +2023,35 @@ migrate_one_ult(void *arg)
 	}
 
 	data_size = daos_iods_len(mrone->mo_iods, mrone->mo_iod_num);
-	data_size += daos_iods_len(mrone->mo_iods_from_parity,
-				   mrone->mo_iods_num_from_parity);
+	data_size += daos_iods_len(mrone->mo_iods_from_parity, mrone->mo_iods_num_from_parity);
+	if (daos_oclass_is_ec(&mrone->mo_oca)) {
+		/* NB: this is a workaround for EC object:
+		 * The fetch buffer is taken from a pre-registered (R)DMA buffer;
+		 * however, a degraded EC read will allocate and register an extra
+		 * buffer to recover data.
+		 *
+		 * Currently, the resource manager cannot control this extra allocation,
+		 * which can lead to increased memory consumption.
+		 *
+		 * While this workaround does not prevent dynamic buffer allocation and
+		 * registration, it does provide relatively precise control over the
+		 * resources consumed by degraded EC reads.
+		 */
+		degraded_size = data_size * MIN(8, obj_ec_data_tgt_nr(&mrone->mo_oca));
+	}
 
 	D_DEBUG(DB_TRACE, DF_RB ": mrone %p data size is " DF_U64 " %d/%d\n", DP_RB_MPT(tls), mrone,
 		data_size, mrone->mo_iod_num, mrone->mo_iods_num_from_parity);
 
 	D_ASSERT(data_size != (daos_size_t)-1);
 
-	rc = migrate_res_hold(tls, MIGR_DATA, data_size, NULL);
+	rc = migrate_res_hold(tls, MIGR_DATA, data_size + degraded_size, NULL);
 	if (rc)
 		D_GOTO(out, rc);
 
 	rc = migrate_dkey(tls, mrone, data_size);
 
-	migrate_res_release(tls, MIGR_DATA, data_size);
+	migrate_res_release(tls, MIGR_DATA, data_size + degraded_size);
 
 	D_DEBUG(DB_REBUILD,
 		DF_RB ": " DF_UOID " layout %u migrate dkey " DF_KEY " inflight_size " DF_U64